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nlohmann committed 2026-11-09 18:59:22 +00:00
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images/json_view_layout.svg
+5 -5
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@@ -17,16 +17,16 @@
<path class="nj-jsonview-arr nj-jsonview-c-line" d="M76 115 L106 115" marker-end="url(#jvl-line)"/>
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<text class="nj-jsonview-mono" x="150" y="120" text-anchor="middle" xml:space="preserve">std::map</text>
<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 C192 115 226 67 226 67" marker-end="url(#jvl-line)"/>
<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 L226 67" marker-end="url(#jvl-line)"/>
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<text class="nj-jsonview-mono nj-jsonview-c-key" x="240" y="72" xml:space="preserve">&quot;port&quot;</text>
<text class="nj-jsonview-mono nj-jsonview-c-num" x="396" y="72" text-anchor="end" xml:space="preserve">6379</text>
<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 C192 115 226 115 226 115" marker-end="url(#jvl-line)"/>
<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 L226 115" marker-end="url(#jvl-line)"/>
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<text class="nj-jsonview-mono nj-jsonview-c-key" x="240" y="120" xml:space="preserve">&quot;price&quot;</text>
<text class="nj-jsonview-mono nj-jsonview-c-num" x="396" y="120" text-anchor="end" xml:space="preserve">19.9</text>
<text class="nj-jsonview-note" x="418" y="120" xml:space="preserve">double: 19.90 is gone</text>
<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 C192 115 226 163 226 163" marker-end="url(#jvl-line)"/>
<path class="nj-jsonview-arr nj-jsonview-c-line" d="M192 115 L226 163" marker-end="url(#jvl-line)"/>
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<text class="nj-jsonview-mono nj-jsonview-c-key" x="240" y="168" xml:space="preserve">&quot;tags&quot;</text>
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@@ -38,8 +38,8 @@
<path class="nj-jsonview-sep" d="M624 146 V180"/>
<text class="nj-jsonview-mono" x="601" y="168" text-anchor="middle" xml:space="preserve">json</text>
<text class="nj-jsonview-mono" x="647" y="168" text-anchor="middle" xml:space="preserve">json</text>
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<text class="nj-jsonview-mono nj-jsonview-sm nj-jsonview-c-str" x="771" y="135" text-anchor="middle" xml:space="preserve">std::string eu</text>
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images/json_view_layout_index.svg
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@@ -0,0 +1,148 @@
<svg class="nj-fig nj-jsonview " viewBox="0 0 840 456" role="img" aria-labelledby="fig-jvli-title fig-jvli-title-d" xmlns="http://www.w3.org/2000/svg">
<title id="fig-jvli-title">The same J&#8203;SON text parsed by json_document::parse()</title>
<desc id="fig-jvli-title-d">The same text parsed by json_document::parse(): it keeps the 54 bytes of source text and builds a flat index of nine 16-byte nodes in document order: object, key port, unsigned integer 6379 (the converted value is in the node), key price, float, key tags, array, string eu, and an escaped string. Keys, the float, and the plain string point back into the source text; the escaped string points into the document&#x27;s buffer of decoded strings. A json_view is two pointers: one to the document and one to a node, here the array.</desc>
<defs>
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<text class="nj-jsonview-h" x="16" y="262" xml:space="preserve">json_document::parse(): the source text stays where it is; one flat index of 16-byte nodes</text>
<text class="nj-jsonview-note" x="16" y="290" xml:space="preserve">source text, 54 bytes (borrowed, or owned by the document)</text>
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<text class="nj-jsonview-mono nj-jsonview-byte" x="49" y="317.5" text-anchor="middle" xml:space="preserve">{</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="63" y="317.5" text-anchor="middle" xml:space="preserve">&quot;</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="77" y="317.5" text-anchor="middle" xml:space="preserve">p</text>
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<text class="nj-jsonview-mono nj-jsonview-byte" x="119" y="317.5" text-anchor="middle" xml:space="preserve">t</text>
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<text class="nj-jsonview-mono nj-jsonview-byte" x="147" y="317.5" text-anchor="middle" xml:space="preserve">:</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="175" y="317.5" text-anchor="middle" xml:space="preserve">6</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="189" y="317.5" text-anchor="middle" xml:space="preserve">3</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="203" y="317.5" text-anchor="middle" xml:space="preserve">7</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="217" y="317.5" text-anchor="middle" xml:space="preserve">9</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="231" y="317.5" text-anchor="middle" xml:space="preserve">,</text>
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<text class="nj-jsonview-mono nj-jsonview-byte" x="315" y="317.5" text-anchor="middle" xml:space="preserve">c</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="329" y="317.5" text-anchor="middle" xml:space="preserve">e</text>
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<text class="nj-jsonview-mono nj-jsonview-byte" x="385" y="317.5" text-anchor="middle" xml:space="preserve">1</text>
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<text class="nj-jsonview-mono nj-jsonview-byte" x="427" y="317.5" text-anchor="middle" xml:space="preserve">9</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="441" y="317.5" text-anchor="middle" xml:space="preserve">0</text>
<text class="nj-jsonview-mono nj-jsonview-byte" x="455" y="317.5" text-anchor="middle" xml:space="preserve">,</text>
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<text class="nj-jsonview-mono nj-jsonview-byte" x="637" y="317.5" text-anchor="middle" xml:space="preserve">u</text>
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<text class="nj-jsonview-note nj-jsonview-strong" x="30" y="602" xml:space="preserve">json_document: owns the node index and the buffer of decoded strings</text>
<text class="nj-jsonview-note" x="30" y="500" xml:space="preserve">node index: 9 nodes × 16 bytes = 144 bytes, in document order</text>
<rect class="nj-jsonview-node nj-jsonview-c-struct" x="36" y="406" width="84" height="68" rx="5"/>
<text class="nj-jsonview-tiny" x="42" y="420" xml:space="preserve">0</text>
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<text class="nj-jsonview-mono nj-jsonview-xs" x="78" y="451" text-anchor="middle" xml:space="preserve">len 3</text>
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<text class="nj-jsonview-mono nj-jsonview-xs" x="254" y="451" text-anchor="middle" xml:space="preserve">6379</text>
<text class="nj-jsonview-mono nj-jsonview-xs" x="254" y="465" text-anchor="middle" xml:space="preserve">(converted)</text>
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<text class="nj-jsonview-tiny" x="394" y="420" xml:space="preserve">4</text>
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<text class="nj-jsonview-mono nj-jsonview-xs" x="782" y="451" text-anchor="middle" xml:space="preserve">escaped</text>
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<text class="nj-jsonview-note" x="773" y="568" text-anchor="middle" xml:space="preserve">decoded strings</text>
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<text class="nj-jsonview-mono" x="751" y="538" text-anchor="middle" xml:space="preserve">a</text>
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<text class="nj-jsonview-mono nj-jsonview-sm" x="470" y="670" text-anchor="end" xml:space="preserve">json_view v = doc.root()[&quot;tags&quot;]</text>
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<title id="nj-blog-cliffs">Operations that grew quadratically or worse: time with 3.12.0 and 3.13.0, log scale</title>
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<title id="nj-blog-digits">Converting eight A&#8203;SCII digits to their value with three multiplications</title>
<desc id="nj-blog-digits-d">The text 12345678 as one word. Masking gives the digit values 1 to 8, one per byte. Multiplying by 10 times 2 to the 8 plus 1 and shifting gives 12, 34, 56 and 78 in 16-bit lanes; multiplying by 100 times 2 to the 16 plus 1 gives 1234 and 5678 in 32-bit lanes; multiplying by 10000 times 2 to the 32 plus 1 gives 12345678.</desc>
<text class="fg-h" x="40" y="20">eight A&#8203;SCII digits in one 64-bit word (byte 0 is the lowest)</text>
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<text class="fg-h" x="40" y="112">&amp; 0x0F0F0F0F0F0F0F0F: one digit value per byte</text>
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<text class="fg-h" x="40" y="186">× (10 · 2⁸ + 1) &gt;&gt; 8, every second byte kept: two digits per 16 bits</text>
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<text class="fg-note fg-note--l" x="40" y="400">Each step combines neighboring lanes, in all lanes of the word at once:</text>
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<title id="nj-blog-overview">Speedup of 3.13.0 over 3.12.0 per workload, Apple M1 Max, Apple clang</title>
<desc id="nj-blog-overview-d">Horizontal bars of the speedup, more is better. twitter.json 3.1x; citm_catalog.json 4.2x; canada.json 3.4x; canada.json, indented 6.5x; citm, ordered_json 6.8x; twitter, std::ifstream 2.5x; citm, FILE* 4.7x; citm, accept() 7.1x; dump() twitter 6.7x; dump() canada 3.0x; dump(4) citm 4.7x; to_cbor() twitter 4.6x; twitter, memory 3.4x; twitter, FILE* 6.6x; diff() canada 10x; iterate canada 2.7x; copy + destroy citm 1.13x; == citm 1.06x.</desc>
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<text class="nj-charts-tick" x="220" y="576">1&#215;</text>
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<text class="nj-charts-tick" x="250" y="576">2&#215;</text>
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<text class="nj-charts-tick" x="310" y="576">4&#215;</text>
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<text class="nj-charts-tick" x="340" y="576">5&#215;</text>
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<text class="nj-charts-tick" x="400" y="576">7&#215;</text>
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<text class="nj-charts-tick" x="490" y="576">10&#215;</text>
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<text class="nj-charts-tick" x="520" y="576">11&#215;</text>
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<title id="nj-blog-price">Compile time of two programs with 3.13.0, alone, with a precompiled header and as a module, compared with 3.12.0</title>
<desc id="nj-blog-price-d">Horizontal bars of the change in compile time against 3.12.0, less is better. Apple clang 21, -O0 (debug), count_numbers, 3.13.0: +38%; Apple clang 21, -O0 (debug), count_numbers, 3.13.0, precompiled header: -28%; Apple clang 21, -O0 (debug), count_numbers, 3.13.0, module: -4%; Apple clang 21, -O0 (debug), server_config, 3.13.0: +34%; Apple clang 21, -O0 (debug), server_config, 3.13.0, precompiled header: -23%; Apple clang 21, -O0 (debug), server_config, 3.13.0, module: +2%; Apple clang 21, -O2, count_numbers, 3.13.0: +49%; Apple clang 21, -O2, count_numbers, 3.13.0, precompiled header: +5%; Apple clang 21, -O2, count_numbers, 3.13.0, module: +21%; Apple clang 21, -O2, server_config, 3.13.0: +45%; Apple clang 21, -O2, server_config, 3.13.0, precompiled header: +10%; Apple clang 21, -O2, server_config, 3.13.0, module: +24%; G&#8203;CC 16, -O0 (debug), count_numbers, 3.13.0: +62%; G&#8203;CC 16, -O0 (debug), count_numbers, 3.13.0, precompiled header: +10%; G&#8203;CC 16, -O0 (debug), count_numbers, 3.13.0, module: +8%; G&#8203;CC 16, -O0 (debug), server_config, 3.13.0: +47%; G&#8203;CC 16, -O0 (debug), server_config, 3.13.0, precompiled header: +14%; G&#8203;CC 16, -O0 (debug), server_config, 3.13.0, module: +15%; G&#8203;CC 16, -O2, count_numbers, 3.13.0: +58%; G&#8203;CC 16, -O2, count_numbers, 3.13.0, precompiled header: +28%; G&#8203;CC 16, -O2, count_numbers, 3.13.0, module: +25%; G&#8203;CC 16, -O2, server_config, 3.13.0: +51%; G&#8203;CC 16, -O2, server_config, 3.13.0, precompiled header: +28%; G&#8203;CC 16, -O2, server_config, 3.13.0, module: +30%.</desc>
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<text class="nj-charts-val" x="332.667" y="164.5">+2%</text>
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<line class="nj-charts-grid" x1="252.5" y1="204" x2="252.5" y2="300"/>
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<text class="nj-charts-val" x="493.25" y="217.5">+49%</text>
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<text class="nj-charts-val" x="397.583" y="245.5">+21%</text>
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<text class="nj-charts-val" x="360" y="280.5">+10%</text>
<path class="nj-charts-c3" d="M320.833 285 H398.833 Q402.833 285 402.833 289 V292 Q402.833 296 398.833 296 H320.833 Z"><title>server_config, Apple clang 21, -O2, 3.13.0, module: 2,169 ms against 1,754 ms with 3.12.0 (+24%)</title></path>
<text class="nj-charts-val" x="407.833" y="294.5">+24%</text>
<text class="nj-charts-panel" x="8" y="328">G&#8203;CC 16, -O0 (debug)</text>
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<line class="nj-charts-grid" x1="252.5" y1="334" x2="252.5" y2="430"/>
<line class="nj-charts-grid" x1="389.167" y1="334" x2="389.167" y2="430"/>
<line class="nj-charts-grid" x1="457.5" y1="334" x2="457.5" y2="430"/>
<line class="nj-charts-grid" x1="525.833" y1="334" x2="525.833" y2="430"/>
<text class="nj-charts-rowlabel nj-charts-code" x="142" y="361" text-anchor="end">count_numbers</text>
<path class="nj-charts-c2" d="M320.833 338 H528.667 Q532.667 338 532.667 342 V345 Q532.667 349 528.667 349 H320.833 Z"><title>count_numbers, G&#8203;CC 16, -O0 (debug), 3.13.0: 2,548 ms against 1,569 ms with 3.12.0 (+62%)</title></path>
<text class="nj-charts-val" x="537.667" y="347.5">+62%</text>
<path class="nj-charts-c1" d="M320.833 352 H351 Q355 352 355 356 V359 Q355 363 351 363 H320.833 Z"><title>count_numbers, G&#8203;CC 16, -O0 (debug), 3.13.0, precompiled header: 1,725 ms against 1,569 ms with 3.12.0 (+10%)</title></path>
<text class="nj-charts-val" x="360" y="361.5">+10%</text>
<path class="nj-charts-c3" d="M320.833 366 H344.167 Q348.167 366 348.167 370 V373 Q348.167 377 344.167 377 H320.833 Z"><title>count_numbers, G&#8203;CC 16, -O0 (debug), 3.13.0, module: 1,700 ms against 1,569 ms with 3.12.0 (+8%)</title></path>
<text class="nj-charts-val" x="353.167" y="375.5">+8%</text>
<text class="nj-charts-rowlabel nj-charts-code" x="142" y="410" text-anchor="end">server_config</text>
<path class="nj-charts-c2" d="M320.833 387 H477.417 Q481.417 387 481.417 391 V394 Q481.417 398 477.417 398 H320.833 Z"><title>server_config, G&#8203;CC 16, -O0 (debug), 3.13.0: 2,985 ms against 2,025 ms with 3.12.0 (+47%)</title></path>
<text class="nj-charts-val" x="486.417" y="396.5">+47%</text>
<path class="nj-charts-c1" d="M320.833 401 H364.667 Q368.667 401 368.667 405 V408 Q368.667 412 364.667 412 H320.833 Z"><title>server_config, G&#8203;CC 16, -O0 (debug), 3.13.0, precompiled header: 2,302 ms against 2,025 ms with 3.12.0 (+14%)</title></path>
<text class="nj-charts-val" x="373.667" y="410.5">+14%</text>
<path class="nj-charts-c3" d="M320.833 415 H368.083 Q372.083 415 372.083 419 V422 Q372.083 426 368.083 426 H320.833 Z"><title>server_config, G&#8203;CC 16, -O0 (debug), 3.13.0, module: 2,326 ms against 2,025 ms with 3.12.0 (+15%)</title></path>
<text class="nj-charts-val" x="377.083" y="424.5">+15%</text>
<text class="nj-charts-panel" x="8" y="458">G&#8203;CC 16, -O2</text>
<line class="nj-charts-grid" x1="184.167" y1="464" x2="184.167" y2="560"/>
<line class="nj-charts-grid" x1="252.5" y1="464" x2="252.5" y2="560"/>
<line class="nj-charts-grid" x1="389.167" y1="464" x2="389.167" y2="560"/>
<line class="nj-charts-grid" x1="457.5" y1="464" x2="457.5" y2="560"/>
<line class="nj-charts-grid" x1="525.833" y1="464" x2="525.833" y2="560"/>
<text class="nj-charts-rowlabel nj-charts-code" x="142" y="491" text-anchor="end">count_numbers</text>
<path class="nj-charts-c2" d="M320.833 468 H515 Q519 468 519 472 V475 Q519 479 515 479 H320.833 Z"><title>count_numbers, G&#8203;CC 16, -O2, 3.13.0: 3,702 ms against 2,336 ms with 3.12.0 (+58%)</title></path>
<text class="nj-charts-val" x="524" y="477.5">+58%</text>
<path class="nj-charts-c1" d="M320.833 482 H412.5 Q416.5 482 416.5 486 V489 Q416.5 493 412.5 493 H320.833 Z"><title>count_numbers, G&#8203;CC 16, -O2, 3.13.0, precompiled header: 2,987 ms against 2,336 ms with 3.12.0 (+28%)</title></path>
<text class="nj-charts-val" x="421.5" y="491.5">+28%</text>
<path class="nj-charts-c3" d="M320.833 496 H402.25 Q406.25 496 406.25 500 V503 Q406.25 507 402.25 507 H320.833 Z"><title>count_numbers, G&#8203;CC 16, -O2, 3.13.0, module: 2,913 ms against 2,336 ms with 3.12.0 (+25%)</title></path>
<text class="nj-charts-val" x="411.25" y="505.5">+25%</text>
<text class="nj-charts-rowlabel nj-charts-code" x="142" y="540" text-anchor="end">server_config</text>
<path class="nj-charts-c2" d="M320.833 517 H491.083 Q495.083 517 495.083 521 V524 Q495.083 528 491.083 528 H320.833 Z"><title>server_config, G&#8203;CC 16, -O2, 3.13.0: 4,714 ms against 3,122 ms with 3.12.0 (+51%)</title></path>
<text class="nj-charts-val" x="500.083" y="526.5">+51%</text>
<path class="nj-charts-c1" d="M320.833 531 H412.5 Q416.5 531 416.5 535 V538 Q416.5 542 412.5 542 H320.833 Z"><title>server_config, G&#8203;CC 16, -O2, 3.13.0, precompiled header: 4,006 ms against 3,122 ms with 3.12.0 (+28%)</title></path>
<text class="nj-charts-val" x="421.5" y="540.5">+28%</text>
<path class="nj-charts-c3" d="M320.833 545 H419.333 Q423.333 545 423.333 549 V552 Q423.333 556 419.333 556 H320.833 Z"><title>server_config, G&#8203;CC 16, -O2, 3.13.0, module: 4,055 ms against 3,122 ms with 3.12.0 (+30%)</title></path>
<text class="nj-charts-val" x="428.333" y="554.5">+30%</text>
<line class="nj-charts-ref" x1="320.833" y1="52" x2="320.833" y2="574"/>
<text class="nj-charts-tick" x="184.167" y="590">&#8722;40%</text>
<text class="nj-charts-tick" x="252.5" y="590">&#8722;20%</text>
<text class="nj-charts-tick" x="320.833" y="590">0</text>
<text class="nj-charts-tick" x="389.167" y="590">+20%</text>
<text class="nj-charts-tick" x="457.5" y="590">+40%</text>
<text class="nj-charts-tick" x="525.833" y="590">+60%</text>
<text class="nj-charts-tick" x="355" y="608">compile time compared with 3.12.0, less is better</text>
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images/perf_blog_swar.svg
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<svg class="nj-fig nj-charts nj-charts--swar" viewBox="0 0 640 312" role="img" aria-labelledby="nj-blog-swar nj-blog-swar-d" xmlns="http://www.w3.org/2000/svg">
<title id="nj-blog-swar">Finding the end of a run of ordinary string characters eight bytes at a time</title>
<desc id="nj-blog-swar-d">The eight bytes w, i, t, t, e, r, quote and comma are loaded as one word. The test sets the high bit only in byte 6, the quote. Counting trailing zero bits gives 55, divided by eight gives 6: bytes 0 to 5 are copied at once, then the quote ends the string.</desc>
<text class="fg-h" x="40" y="20">eight input bytes, loaded as one 64-bit word (byte 0 is the lowest)</text>
<rect class="fg-cell" x="40" y="34" width="64" height="40" rx="4"/>
<text class="fg-code" x="72" y="60" text-anchor="middle">w</text>
<text class="nj-charts-tick" x="72" y="92">0x77</text>
<text class="nj-charts-tick" x="72" y="108">byte 0</text>
<rect class="fg-cell" x="110" y="34" width="64" height="40" rx="4"/>
<text class="fg-code" x="142" y="60" text-anchor="middle">i</text>
<text class="nj-charts-tick" x="142" y="92">0x69</text>
<text class="nj-charts-tick" x="142" y="108">byte 1</text>
<rect class="fg-cell" x="180" y="34" width="64" height="40" rx="4"/>
<text class="fg-code" x="212" y="60" text-anchor="middle">t</text>
<text class="nj-charts-tick" x="212" y="92">0x74</text>
<text class="nj-charts-tick" x="212" y="108">byte 2</text>
<rect class="fg-cell" x="250" y="34" width="64" height="40" rx="4"/>
<text class="fg-code" x="282" y="60" text-anchor="middle">t</text>
<text class="nj-charts-tick" x="282" y="92">0x74</text>
<text class="nj-charts-tick" x="282" y="108">byte 3</text>
<rect class="fg-cell" x="320" y="34" width="64" height="40" rx="4"/>
<text class="fg-code" x="352" y="60" text-anchor="middle">e</text>
<text class="nj-charts-tick" x="352" y="92">0x65</text>
<text class="nj-charts-tick" x="352" y="108">byte 4</text>
<rect class="fg-cell" x="390" y="34" width="64" height="40" rx="4"/>
<text class="fg-code" x="422" y="60" text-anchor="middle">r</text>
<text class="nj-charts-tick" x="422" y="92">0x72</text>
<text class="nj-charts-tick" x="422" y="108">byte 5</text>
<rect class="fg-cell" x="460" y="34" width="64" height="40" rx="4"/>
<rect class="nj-charts-c2" fill-opacity=".25" x="460" y="34" width="64" height="40" rx="4"/>
<text class="fg-code" x="492" y="60" text-anchor="middle">&quot;</text>
<text class="nj-charts-tick" x="492" y="92">0x22</text>
<text class="nj-charts-tick" x="492" y="108">byte 6</text>
<rect class="fg-cell" x="530" y="34" width="64" height="40" rx="4"/>
<text class="fg-code" x="562" y="60" text-anchor="middle">,</text>
<text class="nj-charts-tick" x="562" y="92">0x2C</text>
<text class="nj-charts-tick" x="562" y="108">byte 7</text>
<text class="fg-h" x="40" y="132">swar_string_special(): the high bit of each byte that needs handling</text>
<rect class="fg-cell" x="40" y="146" width="64" height="34" rx="4"/>
<text class="fg-code" x="72" y="169" text-anchor="middle">0x00</text>
<rect class="fg-cell" x="110" y="146" width="64" height="34" rx="4"/>
<text class="fg-code" x="142" y="169" text-anchor="middle">0x00</text>
<rect class="fg-cell" x="180" y="146" width="64" height="34" rx="4"/>
<text class="fg-code" x="212" y="169" text-anchor="middle">0x00</text>
<rect class="fg-cell" x="250" y="146" width="64" height="34" rx="4"/>
<text class="fg-code" x="282" y="169" text-anchor="middle">0x00</text>
<rect class="fg-cell" x="320" y="146" width="64" height="34" rx="4"/>
<text class="fg-code" x="352" y="169" text-anchor="middle">0x00</text>
<rect class="fg-cell" x="390" y="146" width="64" height="34" rx="4"/>
<text class="fg-code" x="422" y="169" text-anchor="middle">0x00</text>
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<rect class="nj-charts-c2" fill-opacity=".25" x="460" y="146" width="64" height="34" rx="4"/>
<text class="fg-code" x="492" y="169" text-anchor="middle">0x80</text>
<rect class="fg-cell" x="530" y="146" width="64" height="34" rx="4"/>
<text class="fg-code" x="562" y="169" text-anchor="middle">0x00</text>
<text class="fg-code" x="40" y="216">count_trailing_zeros(0x0080000000000000) = 55</text>
<text class="fg-code" x="40" y="242">55 / 8 = 6: copy bytes 0 to 5 in one go, then handle the quote</text>
<text class="fg-note fg-note--l" x="40" y="272">No branch per byte: a few subtractions, ANDs and ORs per word,</text>
<text class="fg-note fg-note--l" x="40" y="290">then one count of trailing zeros.</text>
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images/perf_blog_timeline_accept_twitter.svg
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<svg class="nj-fig nj-charts nj-charts--timeline" viewBox="0 0 340 270" role="img" aria-labelledby="nj-blog-tl-accept_twitter nj-blog-tl-accept_twitter-d" xmlns="http://www.w3.org/2000/svg">
<title id="nj-blog-tl-accept_twitter">accept() twitter.json: speedup over 3.12.0 by commit</title>
<desc id="nj-blog-tl-accept_twitter-d">accept() twitter.json: speedup over 3.12.0 at each of 353 commits, ending at 5.1x. Labeled steps, by theme: 4, 1, 4, 4, 2, 2.</desc>
<text class="nj-charts-panel" x="8" y="18">accept() twitter.json</text>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="212">1&#215;</text>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="164.667">2&#215;</text>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="117.333">4&#215;</text>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="70">8&#215;</text>
<line class="nj-charts-axis" x1="44" y1="208" x2="44" y2="212"/>
<text class="nj-charts-tick" x="44" y="225">3.12.0</text>
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<text class="nj-charts-tick" x="117.938" y="225">Sep 2026</text>
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<text class="nj-charts-tick" x="198.375" y="225">Oct</text>
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<text class="nj-charts-note" x="8" y="262">speedup over 3.12.0 (log scale), more is better</text>
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images/perf_blog_timeline_dump_canada.svg
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<title id="nj-blog-tl-dump_canada">dump() canada.json: speedup over 3.12.0 by commit</title>
<desc id="nj-blog-tl-dump_canada-d">dump() canada.json: speedup over 3.12.0 at each of 353 commits, ending at 3.3x. Labeled steps, by theme: 6, 3.</desc>
<text class="nj-charts-panel" x="8" y="18">dump() canada.json</text>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="70">8&#215;</text>
<line class="nj-charts-axis" x1="44" y1="208" x2="44" y2="212"/>
<text class="nj-charts-tick" x="44" y="225">3.12.0</text>
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<text class="nj-charts-note" x="8" y="262">speedup over 3.12.0 (log scale), more is better</text>
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images/perf_blog_timeline_dump_twitter.svg
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<svg class="nj-fig nj-charts nj-charts--timeline" viewBox="0 0 340 270" role="img" aria-labelledby="nj-blog-tl-dump_twitter nj-blog-tl-dump_twitter-d" xmlns="http://www.w3.org/2000/svg">
<title id="nj-blog-tl-dump_twitter">dump() twitter.json: speedup over 3.12.0 by commit</title>
<desc id="nj-blog-tl-dump_twitter-d">dump() twitter.json: speedup over 3.12.0 at each of 353 commits, ending at 6.8x. Labeled steps, by theme: 6, 2, 2, 2.</desc>
<text class="nj-charts-panel" x="8" y="18">dump() twitter.json</text>
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<text class="nj-charts-note" x="8" y="262">speedup over 3.12.0 (log scale), more is better</text>
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<title id="nj-blog-tl-from_cbor_twitter">from_cbor() twitter: speedup over 3.12.0 by commit</title>
<desc id="nj-blog-tl-from_cbor_twitter-d">from_cbor() twitter: speedup over 3.12.0 at each of 353 commits, ending at 2.6x. Labeled steps, by theme: 1, 4, U, U.</desc>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="70">4&#215;</text>
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<text class="nj-charts-tick" x="117.938" y="225">Sep 2026</text>
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<title id="nj-blog-tl-parse_canada">parse() canada.json: speedup over 3.12.0 by commit</title>
<desc id="nj-blog-tl-parse_canada-d">parse() canada.json: speedup over 3.12.0 at each of 353 commits, ending at 2.8x. Labeled steps, by theme: 4, 1, 3, 3, 3, 4.</desc>
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<title id="nj-blog-tl-parse_citm">parse() citm_catalog.json: speedup over 3.12.0 by commit</title>
<desc id="nj-blog-tl-parse_citm-d">parse() citm_catalog.json: speedup over 3.12.0 at each of 353 commits, ending at 3.3x. Labeled steps, by theme: 4, 1, 4, 4, 2, 4.</desc>
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<text class="nj-charts-note" x="8" y="262">speedup over 3.12.0 (log scale), more is better</text>
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<title id="nj-blog-tl-parse_twitter_ifstream">parse() twitter.json, std::ifstream: speedup over 3.12.0 by commit</title>
<desc id="nj-blog-tl-parse_twitter_ifstream-d">parse() twitter.json, std::ifstream: speedup over 3.12.0 at each of 353 commits, ending at 2.2x. Labeled steps, by theme: 1, 1.</desc>
<text class="nj-charts-panel" x="8" y="18">parse() twitter.json, std::ifstream</text>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="70">4&#215;</text>
<line class="nj-charts-axis" x1="44" y1="208" x2="44" y2="212"/>
<text class="nj-charts-tick" x="44" y="225">3.12.0</text>
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<text class="nj-charts-note" x="8" y="262">speedup over 3.12.0 (log scale), more is better</text>
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images/perf_blog_timeline_to_cbor_twitter.svg
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<title id="nj-blog-tl-to_cbor_twitter">to_cbor() twitter: speedup over 3.12.0 by commit</title>
<desc id="nj-blog-tl-to_cbor_twitter-d">to_cbor() twitter: speedup over 3.12.0 at each of 353 commits, ending at 5.0x. Labeled steps, by theme: 4, 6, 6.</desc>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="117.333">4&#215;</text>
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<text class="nj-charts-tick nj-charts-tick--r" x="38" y="70">8&#215;</text>
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<text class="nj-charts-tick" x="44" y="225">3.12.0</text>
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<title id="nj-blog-uc-mac">Use cases: time of each library relative to the fastest, Apple M1 Max</title>
<desc id="nj-blog-uc-mac-d">Table of relative times, libraries by use case. nlohmann/json json_document validate: 1.00; nlohmann/json json_document sum: 1.00; nlohmann/json json_document select: 1.00; nlohmann/json json_document edit: 1.00 (0.85 doing less, N); nlohmann/json json_document minify: 1.00 (0.85 doing less, N); nlohmann/json json_document write: 1.00 (0.71 doing less, N); yyjson validate: 1.37; yyjson sum: 1.11; yyjson select: 1.25; yyjson edit: 1.45; yyjson minify: 1.23 (1.16 doing less, N); yyjson write: 1.26; simdjson validate: 1.52; simdjson sum: 1.20; simdjson select: 1.33 (0.75 doing less, P); simdjson edit: n/a; simdjson minify: 1.73 (0.18 doing less, P); simdjson write: 2.41; sonic-rs (Rust) validate: 1.93; sonic-rs (Rust) sum: 1.53; sonic-rs (Rust) select: 1.83; sonic-rs (Rust) edit: 2.08; sonic-rs (Rust) minify: 1.93; sonic-rs (Rust) write: 2.38; sonic-cpp validate: no fully validating way (2.53 doing less, U); sonic-cpp sum: no fully validating way (1.86 doing less, U); sonic-cpp select: no fully validating way (2.31 doing less, U); sonic-cpp edit: no fully validating way (1.68 doing less, U); sonic-cpp minify: no fully validating way (2.03 doing less, U); sonic-cpp write: 1.59; simd-json (Rust) validate: 2.07; simd-json (Rust) sum: 1.62; simd-json (Rust) select: 2.38; simd-json (Rust) edit: 2.84; simd-json (Rust) minify: 3.40; simd-json (Rust) write: 3.10; Glaze validate: 2.04; Glaze sum: 3.85; Glaze select: 1.79 (0.82 doing less, P); Glaze edit: 4.41; Glaze minify: 5.19 (1.03 doing less, P); Glaze write: 2.23; Boost.J&#8203;SON validate: 2.56; Boost.J&#8203;SON sum: 1.99; Boost.J&#8203;SON select: 3.27; Boost.J&#8203;SON edit: 3.21; Boost.J&#8203;SON minify: 3.87; Boost.J&#8203;SON write: 3.75; serde_json (Rust) validate: 2.46 (2.23 doing less, U); serde_json (Rust) sum: 2.59; serde_json (Rust) select: 2.39 (2.24 doing less, U); serde_json (Rust) edit: 4.99; serde_json (Rust) minify: 5.85; serde_json (Rust) write: 2.95; nlohmann/json json validate: 2.71; nlohmann/json json sum: 1.96; nlohmann/json json select: 6.87; nlohmann/json json edit: 3.73; nlohmann/json json minify: 4.89; nlohmann/json json write: 2.10; RapidJSON validate: 4.72 (3.09 doing less, U); RapidJSON sum: 4.15 (2.85 doing less, U); RapidJSON select: 5.91 (3.82 doing less, U); RapidJSON edit: 4.82 (3.77 doing less, U); RapidJSON minify: 4.86 (3.60 doing less, U N); RapidJSON write: 5.88.</desc>
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<text class="nj-charts-cell" x="730" y="102" text-anchor="middle">1.26</text>
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<text class="nj-charts-rowlabel " x="216" y="138" text-anchor="end">simdjson</text>
<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · validate&#10;1.52× the time of the fastest library (fully validating)&#10;way: D&#8203;OM&#10;twitter.json: 212 µs&#10;citm_catalog.json: 452 µs&#10;canada.json: 1,888 µs&#10;jeopardy.json: 28,843 µs">
<rect class="nj-heat-2" x="225" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="138" text-anchor="middle">1.52</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · sum&#10;1.20× the time of the fastest library (fully validating)&#10;twitter.json: 249 µs · D&#8203;OM&#10;citm_catalog.json: 571 µs · On-Demand&#10;canada.json: 2,374 µs · On-Demand&#10;jeopardy.json: 35,111 µs · D&#8203;OM">
<rect class="nj-heat-1" x="317" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="138" text-anchor="middle">1.20</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · select&#10;1.33× the time of the fastest library (fully validating)&#10;way: D&#8203;OM&#10;twitter.json: 196 µs&#10;citm_catalog.json: 450 µs&#10;canada.json: 1,886 µs&#10;jeopardy.json: 30,504 µs">
<rect class="nj-heat-1" x="409" y="117" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="138" text-anchor="middle">1.33</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · select, checking less&#10;0.75× the time of the fastest fully validating library&#10;twitter.json: 127 µs · On-Demand structs&#10;citm_catalog.json: 354 µs · On-Demand&#10;canada.json: 566 µs · On-Demand (key selectors)&#10;jeopardy.json: 19,562 µs · On-Demand&#10;reads lazily: On-Demand reads only what you ask for and steps over the rest by matching brackets">
<rect class="nj-heat-0" x="455" y="117" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="132" text-anchor="middle">0.75</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="145" text-anchor="middle">P</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · edit&#10;simdjson&#x27;s documents are read-only: it has no A&#8203;PI to change a value and write the result">
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<text class="nj-charts-tick" x="546" y="138">n/a</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · minify&#10;1.73× the time of the fastest library (fully validating)&#10;way: D&#8203;OM + to_string&#10;twitter.json: 423 µs&#10;citm_catalog.json: 848 µs&#10;canada.json: 5,120 µs&#10;jeopardy.json: 61,059 µs">
<rect class="nj-heat-2" x="593" y="117" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="138" text-anchor="middle">1.73</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · minify, checking less&#10;0.18× the time of the fastest fully validating library&#10;way: minify&#10;twitter.json: 62.3 µs&#10;citm_catalog.json: 171 µs&#10;canada.json: 227 µs&#10;jeopardy.json: 5,762 µs&#10;simdjson::minify() only removes whitespace, without parsing the values">
<rect class="nj-heat-0" x="639" y="117" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="132" text-anchor="middle">0.18</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="145" text-anchor="middle">P</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · write&#10;2.41× the time of the fastest library (fully validating)&#10;way: to_string&#10;twitter.json: 199 µs&#10;citm_catalog.json: 385 µs&#10;canada.json: 3,241 µs&#10;jeopardy.json: 32,208 µs">
<rect class="nj-heat-2" x="685" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="138" text-anchor="middle">2.41</text>
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<text class="nj-charts-rowlabel " x="216" y="174" text-anchor="end">sonic-rs (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · validate&#10;1.93× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 326 µs&#10;citm_catalog.json: 681 µs&#10;canada.json: 1,939 µs&#10;jeopardy.json: 31,450 µs">
<rect class="nj-heat-2" x="225" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="174" text-anchor="middle">1.93</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · sum&#10;1.53× the time of the fastest library (fully validating)&#10;way: visitor&#10;twitter.json: 364 µs&#10;citm_catalog.json: 778 µs&#10;canada.json: 2,703 µs&#10;jeopardy.json: 41,361 µs">
<rect class="nj-heat-2" x="317" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="174" text-anchor="middle">1.53</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · select&#10;1.83× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 333 µs&#10;citm_catalog.json: 691 µs&#10;canada.json: 1,936 µs&#10;jeopardy.json: 40,660 µs">
<rect class="nj-heat-2" x="409" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="174" text-anchor="middle">1.83</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · edit&#10;2.08× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 634 µs&#10;citm_catalog.json: 1,257 µs&#10;canada.json: 4,396 µs&#10;jeopardy.json: 140,936 µs">
<rect class="nj-heat-2" x="501" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="174" text-anchor="middle">2.08</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · minify&#10;1.93× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 535 µs&#10;citm_catalog.json: 1,134 µs&#10;canada.json: 4,377 µs&#10;jeopardy.json: 64,832 µs">
<rect class="nj-heat-2" x="593" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="174" text-anchor="middle">1.93</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · write&#10;2.38× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 212 µs&#10;citm_catalog.json: 446 µs&#10;canada.json: 2,419 µs&#10;jeopardy.json: 33,366 µs">
<rect class="nj-heat-2" x="685" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="174" text-anchor="middle">2.38</text>
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<text class="nj-charts-rowlabel " x="216" y="210" text-anchor="end">sonic-cpp</text>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · validate, checking less&#10;2.53× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 382 µs&#10;citm_catalog.json: 985 µs&#10;canada.json: 2,578 µs&#10;jeopardy.json: 41,617 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-3" x="225" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="204" text-anchor="middle">2.53</text>
<text class="nj-charts-cell nj-charts-cell--small" x="270" y="217" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · sum, checking less&#10;1.86× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 428 µs&#10;citm_catalog.json: 1,087 µs&#10;canada.json: 2,993 µs&#10;jeopardy.json: 48,688 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-2" x="317" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="204" text-anchor="middle">1.86</text>
<text class="nj-charts-cell nj-charts-cell--small" x="362" y="217" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · select, checking less&#10;2.31× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 385 µs&#10;citm_catalog.json: 990 µs&#10;canada.json: 2,586 µs&#10;jeopardy.json: 45,858 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-2" x="409" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="204" text-anchor="middle">2.31</text>
<text class="nj-charts-cell nj-charts-cell--small" x="454" y="217" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · edit, checking less&#10;1.68× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 486 µs&#10;citm_catalog.json: 1,224 µs&#10;canada.json: 5,638 µs&#10;jeopardy.json: 62,688 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-2" x="501" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="204" text-anchor="middle">1.68</text>
<text class="nj-charts-cell nj-charts-cell--small" x="546" y="217" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · minify, checking less&#10;2.03× the time of the fastest fully validating library&#10;way: Document + Serialize&#10;twitter.json: 500 µs&#10;citm_catalog.json: 1,220 µs&#10;canada.json: 5,676 µs&#10;jeopardy.json: 61,236 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-2" x="593" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="204" text-anchor="middle">2.03</text>
<text class="nj-charts-cell nj-charts-cell--small" x="638" y="217" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · write&#10;1.59× the time of the fastest library (fully validating)&#10;way: Serialize&#10;twitter.json: 108 µs&#10;citm_catalog.json: 230 µs&#10;canada.json: 3,093 µs&#10;jeopardy.json: 19,651 µs">
<rect class="nj-heat-2" x="685" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="210" text-anchor="middle">1.59</text>
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<text class="nj-charts-rowlabel " x="216" y="246" text-anchor="end">simd-json (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · validate&#10;2.07× the time of the fastest library (fully validating)&#10;way: tape (copy)&#10;twitter.json: 289 µs&#10;citm_catalog.json: 698 µs&#10;canada.json: 2,278 µs&#10;jeopardy.json: 38,874 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-2" x="225" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="246" text-anchor="middle">2.07</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · sum&#10;1.62× the time of the fastest library (fully validating)&#10;way: visitor (copy)&#10;twitter.json: 354 µs&#10;citm_catalog.json: 866 µs&#10;canada.json: 2,717 µs&#10;jeopardy.json: 47,518 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-2" x="317" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="246" text-anchor="middle">1.62</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · select&#10;2.38× the time of the fastest library (fully validating)&#10;way: structs (copy)&#10;twitter.json: 364 µs&#10;citm_catalog.json: 914 µs&#10;canada.json: 2,657 µs&#10;jeopardy.json: 57,697 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-2" x="409" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="246" text-anchor="middle">2.38</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · edit&#10;2.84× the time of the fastest library (fully validating)&#10;way: borrowed (copy)&#10;twitter.json: 948 µs&#10;citm_catalog.json: 2,102 µs&#10;canada.json: 7,654 µs&#10;jeopardy.json: 110,693 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="501" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="246" text-anchor="middle">2.84</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · minify&#10;3.40× the time of the fastest library (fully validating)&#10;way: borrowed (copy)&#10;twitter.json: 952 µs&#10;citm_catalog.json: 2,111 µs&#10;canada.json: 7,658 µs&#10;jeopardy.json: 108,130 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="593" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="246" text-anchor="middle">3.40</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · write&#10;3.10× the time of the fastest library (fully validating)&#10;way: borrowed&#10;twitter.json: 355 µs&#10;citm_catalog.json: 478 µs&#10;canada.json: 2,728 µs&#10;jeopardy.json: 47,412 µs">
<rect class="nj-heat-3" x="685" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="246" text-anchor="middle">3.10</text>
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<text class="nj-charts-rowlabel " x="216" y="282" text-anchor="end">Glaze</text>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · validate&#10;2.04× the time of the fastest library (fully validating)&#10;way: validate_json&#10;twitter.json: 331 µs&#10;citm_catalog.json: 862 µs&#10;canada.json: 1,326 µs&#10;jeopardy.json: 45,192 µs">
<rect class="nj-heat-2" x="225" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="282" text-anchor="middle">2.04</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · sum&#10;3.85× the time of the fastest library (fully validating)&#10;way: generic (double, strict)&#10;twitter.json: 968 µs&#10;citm_catalog.json: 2,049 µs&#10;canada.json: 6,331 µs&#10;jeopardy.json: 99,763 µs">
<rect class="nj-heat-3" x="317" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="282" text-anchor="middle">3.85</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · select&#10;1.79× the time of the fastest library (fully validating)&#10;way: structs (validate_skipped)&#10;twitter.json: 311 µs&#10;citm_catalog.json: 854 µs&#10;canada.json: 1,316 µs&#10;jeopardy.json: 46,924 µs">
<rect class="nj-heat-2" x="409" y="261" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="282" text-anchor="middle">1.79</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · select, checking less&#10;0.82× the time of the fastest fully validating library&#10;way: structs&#10;twitter.json: 241 µs&#10;citm_catalog.json: 255 µs&#10;canada.json: 313 µs&#10;jeopardy.json: 37,578 µs&#10;reads into structs and steps over fields it doesn&#x27;t know without checking them (validate_skipped checks them too)">
<rect class="nj-heat-0" x="455" y="261" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="276" text-anchor="middle">0.82</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="289" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · edit&#10;4.41× the time of the fastest library (fully validating)&#10;way: generic (strict)&#10;twitter.json: 1,539 µs&#10;citm_catalog.json: 3,235 µs&#10;canada.json: 11,083 µs&#10;jeopardy.json: 178,333 µs">
<rect class="nj-heat-3" x="501" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="282" text-anchor="middle">4.41</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · minify&#10;5.19× the time of the fastest library (fully validating)&#10;way: generic (strict)&#10;twitter.json: 1,505 µs&#10;citm_catalog.json: 3,225 µs&#10;canada.json: 11,092 µs&#10;jeopardy.json: 168,855 µs">
<rect class="nj-heat-4" x="593" y="261" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="282" text-anchor="middle">5.19</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · minify, checking less&#10;1.03× the time of the fastest fully validating library&#10;way: minify_json&#10;twitter.json: 281 µs&#10;citm_catalog.json: 729 µs&#10;canada.json: 1,722 µs&#10;jeopardy.json: 39,976 µs&#10;minify_json only removes whitespace, without parsing the values">
<rect class="nj-heat-0" x="639" y="261" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="276" text-anchor="middle">1.03</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="289" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · write&#10;2.23× the time of the fastest library (fully validating)&#10;twitter.json: 216 µs · generic&#10;citm_catalog.json: 469 µs · generic&#10;canada.json: 1,720 µs · generic (strict)&#10;jeopardy.json: 33,934 µs · generic">
<rect class="nj-heat-2" x="685" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="282" text-anchor="middle">2.23</text>
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<text class="nj-charts-rowlabel " x="216" y="318" text-anchor="end">Boost.J&#8203;SON</text>
<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · validate&#10;2.56× the time of the fastest library (fully validating)&#10;way: S&#8203;AX (numbers: none)&#10;twitter.json: 535 µs&#10;citm_catalog.json: 994 µs&#10;canada.json: 1,467 µs&#10;jeopardy.json: 53,939 µs">
<rect class="nj-heat-3" x="225" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="318" text-anchor="middle">2.56</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · sum&#10;1.99× the time of the fastest library (fully validating)&#10;way: S&#8203;AX&#10;twitter.json: 535 µs&#10;citm_catalog.json: 1,010 µs&#10;canada.json: 3,067 µs&#10;jeopardy.json: 53,704 µs">
<rect class="nj-heat-2" x="317" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="318" text-anchor="middle">1.99</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · select&#10;3.27× the time of the fastest library (fully validating)&#10;twitter.json: 617 µs · parse_into structs&#10;citm_catalog.json: 1,205 µs · parse_into structs&#10;canada.json: 3,650 µs · parse&#10;jeopardy.json: 67,255 µs · parse_into structs">
<rect class="nj-heat-3" x="409" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="318" text-anchor="middle">3.27</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · edit&#10;3.21× the time of the fastest library (fully validating)&#10;way: parse&#10;twitter.json: 1,368 µs&#10;citm_catalog.json: 1,992 µs&#10;canada.json: 6,573 µs&#10;jeopardy.json: 155,237 µs">
<rect class="nj-heat-3" x="501" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="318" text-anchor="middle">3.21</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · minify&#10;3.87× the time of the fastest library (fully validating)&#10;way: parse + serialize&#10;twitter.json: 1,393 µs&#10;citm_catalog.json: 1,986 µs&#10;canada.json: 6,542 µs&#10;jeopardy.json: 154,677 µs">
<rect class="nj-heat-3" x="593" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="318" text-anchor="middle">3.87</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · write&#10;3.75× the time of the fastest library (fully validating)&#10;way: serialize&#10;twitter.json: 507 µs&#10;citm_catalog.json: 508 µs&#10;canada.json: 2,923 µs&#10;jeopardy.json: 62,583 µs">
<rect class="nj-heat-3" x="685" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="318" text-anchor="middle">3.75</text>
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<text class="nj-charts-rowlabel " x="216" y="354" text-anchor="end">serde_json (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · validate&#10;2.46× the time of the fastest library (fully validating)&#10;way: from_utf8 + IgnoredAny&#10;twitter.json: 452 µs&#10;citm_catalog.json: 1,103 µs&#10;canada.json: 1,556 µs&#10;jeopardy.json: 46,517 µs">
<rect class="nj-heat-2" x="225" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="247.5" y="354" text-anchor="middle">2.46</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · validate, checking less&#10;2.23× the time of the fastest fully validating library&#10;way: IgnoredAny&#10;twitter.json: 354 µs&#10;citm_catalog.json: 1,047 µs&#10;canada.json: 1,451 µs&#10;jeopardy.json: 44,984 µs&#10;trusts U&#8203;TF-8 in the strings it skips (from_slice); strings it reads are checked">
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<text class="nj-charts-cell" x="292.5" y="348" text-anchor="middle">2.23</text>
<text class="nj-charts-cell nj-charts-cell--small" x="292.5" y="361" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · sum&#10;2.59× the time of the fastest library (fully validating)&#10;way: visitor&#10;twitter.json: 652 µs&#10;citm_catalog.json: 1,242 µs&#10;canada.json: 4,772 µs&#10;jeopardy.json: 66,568 µs">
<rect class="nj-heat-3" x="317" y="333" width="90" height="34" rx="3"/>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · select&#10;2.39× the time of the fastest library (fully validating)&#10;way: from_utf8 + structs&#10;twitter.json: 480 µs&#10;citm_catalog.json: 1,125 µs&#10;canada.json: 1,560 µs&#10;jeopardy.json: 62,378 µs">
<rect class="nj-heat-2" x="409" y="333" width="44" height="34" rx="3"/>
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<text class="nj-charts-cell" x="476.5" y="348" text-anchor="middle">2.24</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="361" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · edit&#10;4.99× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 2,009 µs&#10;citm_catalog.json: 3,316 µs&#10;canada.json: 9,666 µs&#10;jeopardy.json: 251,931 µs">
<rect class="nj-heat-3" x="501" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="354" text-anchor="middle">4.99</text>
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<text class="nj-charts-cell" x="638" y="354" text-anchor="middle">5.85</text>
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<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="390" text-anchor="end">nlohmann/json json</text>
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<text class="nj-charts-cell" x="270" y="390" text-anchor="middle">2.71</text>
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<rect class="nj-heat-2" x="317" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="390" text-anchor="middle">1.96</text>
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<text class="nj-charts-cell" x="454" y="390" text-anchor="middle">6.87</text>
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<rect class="nj-heat-3" x="501" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="390" text-anchor="middle">3.73</text>
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<rect class="nj-heat-3" x="593" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="390" text-anchor="middle">4.89</text>
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<rect class="nj-heat-2" x="685" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="390" text-anchor="middle">2.10</text>
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<text class="nj-charts-rowlabel " x="216" y="426" text-anchor="end">RapidJSON</text>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · validate&#10;4.72× the time of the fastest library (fully validating)&#10;twitter.json: 1,307 µs · insitu (copy untimed)&#10;citm_catalog.json: 1,397 µs · S&#8203;AX (string stream, default precision)&#10;canada.json: 1,982 µs · S&#8203;AX (string stream, default precision)&#10;jeopardy.json: 134,679 µs · S&#8203;AX (string stream, default precision)">
<rect class="nj-heat-3" x="225" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="247.5" y="426" text-anchor="middle">4.72</text>
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<text class="nj-charts-cell" x="292.5" y="420" text-anchor="middle">3.09</text>
<text class="nj-charts-cell nj-charts-cell--small" x="292.5" y="433" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · sum&#10;4.15× the time of the fastest library (fully validating)&#10;twitter.json: 1,329 µs · S&#8203;AX&#10;citm_catalog.json: 1,455 µs · S&#8203;AX (string stream)&#10;canada.json: 6,453 µs · S&#8203;AX (string stream)&#10;jeopardy.json: 136,103 µs · S&#8203;AX (string stream)">
<rect class="nj-heat-3" x="317" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="339.5" y="426" text-anchor="middle">4.15</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · sum, checking less&#10;2.85× the time of the fastest fully validating library&#10;twitter.json: 735 µs · S&#8203;AX (string stream) (no encoding check)&#10;citm_catalog.json: 1,136 µs · S&#8203;AX (string stream) (no encoding check)&#10;canada.json: 6,453 µs · S&#8203;AX (string stream) (validates fully)&#10;jeopardy.json: 69,604 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="363" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="384.5" y="420" text-anchor="middle">2.85</text>
<text class="nj-charts-cell nj-charts-cell--small" x="384.5" y="433" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · select&#10;5.91× the time of the fastest library (fully validating)&#10;twitter.json: 1,304 µs · insitu (copy untimed)&#10;citm_catalog.json: 1,554 µs · insitu (copy untimed)&#10;canada.json: 6,776 µs · Document (string stream)&#10;jeopardy.json: 141,509 µs · insitu (copy untimed)">
<rect class="nj-heat-4" x="409" y="405" width="44" height="34" rx="3"/>
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<text class="nj-charts-cell" x="476.5" y="420" text-anchor="middle">3.82</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="433" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · edit&#10;4.82× the time of the fastest library (fully validating)&#10;twitter.json: 1,922 µs · Document&#10;citm_catalog.json: 2,388 µs · insitu (copy untimed)&#10;canada.json: 13,836 µs · Document (string stream)&#10;jeopardy.json: 221,270 µs · insitu (copy untimed)">
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · edit, checking less&#10;3.77× the time of the fastest fully validating library&#10;way: insitu (copy untimed) (no encoding check)&#10;twitter.json: 1,344 µs&#10;citm_catalog.json: 1,964 µs&#10;canada.json: 13,794 µs&#10;jeopardy.json: 144,741 µs&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
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<text class="nj-charts-cell" x="568.5" y="420" text-anchor="middle">3.77</text>
<text class="nj-charts-cell nj-charts-cell--small" x="568.5" y="433" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · minify&#10;4.86× the time of the fastest library (fully validating)&#10;twitter.json: 1,525 µs · S&#8203;AX to Writer&#10;citm_catalog.json: 1,808 µs · S&#8203;AX to Writer (string stream)&#10;canada.json: 14,460 µs · Document + Writer&#10;jeopardy.json: 174,558 µs · S&#8203;AX to Writer (string stream)">
<rect class="nj-heat-3" x="593" y="405" width="44" height="34" rx="3"/>
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<text class="nj-charts-cell" x="660.5" y="420" text-anchor="middle">3.60</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="433" text-anchor="middle">U N</text>
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<rect class="nj-heat-4" x="685" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="426" text-anchor="middle">5.88</text>
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<text class="nj-charts-tick nj-charts-tick--l" x="8" y="472">time relative to the fastest fully validating library, less is better</text>
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<text class="nj-charts-cell nj-charts-cell--small" x="46" y="496" text-anchor="middle">below 1.15</text></g>
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<text class="nj-charts-cell nj-charts-cell--small" x="126" y="496" text-anchor="middle">1.15 to 1.5</text></g>
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<text class="nj-charts-cell nj-charts-cell--small" x="206" y="496" text-anchor="middle">1.5 to 2.5</text></g>
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<text class="nj-charts-cell nj-charts-cell--small" x="286" y="496" text-anchor="middle">2.5 to 5</text></g>
<g><rect class="nj-heat-4" x="328" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="366" y="496" text-anchor="middle">5 and more</text></g>
<rect class="nj-heat-na" x="420" y="482" width="40" height="20" rx="3"/>
<text class="nj-charts-tick" x="440" y="496">n/a</text>
<text class="nj-charts-tick nj-charts-tick--l" x="468" y="496">no A&#8203;PI for it</text>
</svg>
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<svg class="nj-fig nj-charts nj-charts--blog nj-charts--heat" viewBox="0 0 784 510" role="img" aria-labelledby="nj-blog-uc-x86-clang nj-blog-uc-x86-clang-d" xmlns="http://www.w3.org/2000/svg">
<title id="nj-blog-uc-x86-clang">Use cases: time of each library relative to the fastest, x86-64 with Clang 23</title>
<desc id="nj-blog-uc-x86-clang-d">Table of relative times, libraries by use case. nlohmann/json json_document validate: 1.00; nlohmann/json json_document sum: 1.00; nlohmann/json json_document select: 1.00; nlohmann/json json_document edit: 1.00 (0.81 doing less, N); nlohmann/json json_document minify: 1.00 (0.83 doing less, N); nlohmann/json json_document write: 1.00 (0.69 doing less, N); yyjson validate: 1.87; yyjson sum: 1.00; yyjson select: 1.23; yyjson edit: 1.43; yyjson minify: 1.16 (1.00 doing less, N); yyjson write: 1.14; sonic-cpp validate: no fully validating way (2.32 doing less, U); sonic-cpp sum: no fully validating way (1.20 doing less, U); sonic-cpp select: no fully validating way (1.53 doing less, U); sonic-cpp edit: no fully validating way (1.24 doing less, U); sonic-cpp minify: no fully validating way (1.38 doing less, U); sonic-cpp write: 1.28; simdjson validate: 2.03; simdjson sum: 1.13; simdjson select: 1.32 (0.57 doing less, P); simdjson edit: n/a; simdjson minify: 1.58 (0.18 doing less, P); simdjson write: 2.00; sonic-rs (Rust) validate: 1.88; sonic-rs (Rust) sum: 1.07; sonic-rs (Rust) select: 1.39; sonic-rs (Rust) edit: 1.90; sonic-rs (Rust) minify: 1.73; sonic-rs (Rust) write: 1.94; Boost.J&#8203;SON validate: 1.79; Boost.J&#8203;SON sum: 1.12; Boost.J&#8203;SON select: 2.24; Boost.J&#8203;SON edit: 2.39; Boost.J&#8203;SON minify: 2.68; Boost.J&#8203;SON write: 2.31; simd-json (Rust) validate: 3.52; simd-json (Rust) sum: 1.80; simd-json (Rust) select: 2.64; simd-json (Rust) edit: 2.88; simd-json (Rust) minify: 3.38; simd-json (Rust) write: 2.21; serde_json (Rust) validate: 2.33 (2.08 doing less, U); serde_json (Rust) sum: 2.22; serde_json (Rust) select: 1.77; serde_json (Rust) edit: 4.54; serde_json (Rust) minify: 4.92; serde_json (Rust) write: 2.15; Glaze validate: 2.23; Glaze sum: 4.03 (3.78 doing less, P); Glaze select: 1.43 (0.62 doing less, P); Glaze edit: 5.53; Glaze minify: 5.77 (0.70 doing less, P); Glaze write: 1.90; nlohmann/json json validate: 2.77; nlohmann/json json sum: 1.44; nlohmann/json json select: 7.56; nlohmann/json json edit: 3.99; nlohmann/json json minify: 4.91; nlohmann/json json write: 1.86; RapidJSON validate: 4.94 (3.76 doing less, U); RapidJSON sum: 2.98 (2.28 doing less, U); RapidJSON select: 4.20 (3.27 doing less, U); RapidJSON edit: 3.06 (2.60 doing less, U); RapidJSON minify: 3.61 (2.65 doing less, U N); RapidJSON write: 2.79.</desc>
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<text class="nj-charts-tick" x="362" y="34">sum</text>
<text class="nj-charts-tick" x="454" y="34">select</text>
<text class="nj-charts-tick" x="546" y="34">edit</text>
<text class="nj-charts-tick" x="638" y="34">minify</text>
<text class="nj-charts-tick" x="730" y="34">write</text>
<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="66" text-anchor="end">nlohmann/json json_document</text>
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<text class="nj-charts-cell" x="523.5" y="66" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · edit, checking less&#10;0.81× the time of the fastest fully validating library&#10;twitter.json: 526 µs · editable (validates fully)&#10;citm_catalog.json: 1,127 µs · editable (validates fully)&#10;canada.json: 2,443 µs · editable (source numbers) (validates fully)&#10;jeopardy.json: 196,370 µs · editable (validates fully)&#10;copies each number&#x27;s text instead of formatting it (number_format::source)">
<rect class="nj-heat-0" x="547" y="45" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="568.5" y="60" text-anchor="middle">0.81</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · minify&#10;1.00× the time of the fastest library (fully validating)&#10;way: parse + dump&#10;twitter.json: 518 µs&#10;citm_catalog.json: 1,040 µs&#10;canada.json: 5,043 µs&#10;jeopardy.json: 146,125 µs">
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<rect class="nj-heat-0" x="639" y="45" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="60" text-anchor="middle">0.83</text>
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<rect class="nj-heat-0" x="731" y="45" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="752.5" y="60" text-anchor="middle">0.69</text>
<text class="nj-charts-cell nj-charts-cell--small" x="752.5" y="73" text-anchor="middle">N</text>
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<text class="nj-charts-rowlabel " x="216" y="102" text-anchor="end">yyjson</text>
<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · validate&#10;1.87× the time of the fastest library (fully validating)&#10;twitter.json: 334 µs · insitu (copy untimed)&#10;citm_catalog.json: 811 µs · insitu (copy untimed)&#10;canada.json: 2,580 µs · read (raw numbers)&#10;jeopardy.json: 83,153 µs · insitu (copy untimed)">
<rect class="nj-heat-2" x="225" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="102" text-anchor="middle">1.87</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · sum&#10;1.00× the time of the fastest library (fully validating)&#10;way: insitu (copy untimed)&#10;twitter.json: 399 µs&#10;citm_catalog.json: 946 µs&#10;canada.json: 3,445 µs&#10;jeopardy.json: 88,447 µs">
<rect class="nj-heat-0" x="317" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="102" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · select&#10;1.23× the time of the fastest library (fully validating)&#10;twitter.json: 351 µs · insitu (copy untimed)&#10;citm_catalog.json: 788 µs · insitu (copy untimed)&#10;canada.json: 2,632 µs · read (raw numbers)&#10;jeopardy.json: 92,551 µs · insitu (copy untimed)">
<rect class="nj-heat-1" x="409" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="102" text-anchor="middle">1.23</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · edit&#10;1.43× the time of the fastest library (fully validating)&#10;twitter.json: 918 µs · insitu (copy) + mut copy&#10;citm_catalog.json: 1,548 µs · insitu (copy untimed) + mut copy&#10;canada.json: 7,155 µs · insitu (copy untimed) + mut copy&#10;jeopardy.json: 270,654 µs · insitu (copy untimed) + mut copy&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-1" x="501" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="102" text-anchor="middle">1.43</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · minify&#10;1.16× the time of the fastest library (fully validating)&#10;way: insitu (copy untimed) + write&#10;twitter.json: 620 µs&#10;citm_catalog.json: 1,189 µs&#10;canada.json: 6,283 µs&#10;jeopardy.json: 154,016 µs">
<rect class="nj-heat-1" x="593" y="81" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="102" text-anchor="middle">1.16</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · minify, checking less&#10;1.00× the time of the fastest fully validating library&#10;twitter.json: 620 µs · insitu (copy untimed) + write (validates fully)&#10;citm_catalog.json: 1,189 µs · insitu (copy untimed) + write (validates fully)&#10;canada.json: 3,472 µs · read (raw numbers) + write (validates fully)&#10;jeopardy.json: 154,016 µs · insitu (copy untimed) + write (validates fully)&#10;copies each number&#x27;s text instead of formatting it (YYJSON_READ_NUMBER_AS_RAW)">
<rect class="nj-heat-0" x="639" y="81" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="96" text-anchor="middle">1.00</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="109" text-anchor="middle">N</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · write&#10;1.14× the time of the fastest library (fully validating)&#10;way: write&#10;twitter.json: 218 µs&#10;citm_catalog.json: 386 µs&#10;canada.json: 3,476 µs&#10;jeopardy.json: 71,247 µs">
<rect class="nj-heat-0" x="685" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="102" text-anchor="middle">1.14</text>
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<text class="nj-charts-rowlabel " x="216" y="138" text-anchor="end">sonic-cpp</text>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · validate, checking less&#10;2.32× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 448 µs&#10;citm_catalog.json: 1,032 µs&#10;canada.json: 3,143 µs&#10;jeopardy.json: 94,884 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-2" x="225" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="132" text-anchor="middle">2.32</text>
<text class="nj-charts-cell nj-charts-cell--small" x="270" y="145" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · sum, checking less&#10;1.20× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 502 µs&#10;citm_catalog.json: 1,175 µs&#10;canada.json: 3,754 µs&#10;jeopardy.json: 104,583 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-1" x="317" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="132" text-anchor="middle">1.20</text>
<text class="nj-charts-cell nj-charts-cell--small" x="362" y="145" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · select, checking less&#10;1.53× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 460 µs&#10;citm_catalog.json: 1,011 µs&#10;canada.json: 3,204 µs&#10;jeopardy.json: 108,245 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-2" x="409" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="132" text-anchor="middle">1.53</text>
<text class="nj-charts-cell nj-charts-cell--small" x="454" y="145" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · edit, checking less&#10;1.24× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 711 µs&#10;citm_catalog.json: 1,472 µs&#10;canada.json: 7,996 µs&#10;jeopardy.json: 183,852 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-1" x="501" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="132" text-anchor="middle">1.24</text>
<text class="nj-charts-cell nj-charts-cell--small" x="546" y="145" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · minify, checking less&#10;1.38× the time of the fastest fully validating library&#10;way: Document + Serialize&#10;twitter.json: 710 µs&#10;citm_catalog.json: 1,485 µs&#10;canada.json: 8,122 µs&#10;jeopardy.json: 166,935 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-1" x="593" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="132" text-anchor="middle">1.38</text>
<text class="nj-charts-cell nj-charts-cell--small" x="638" y="145" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · write&#10;1.28× the time of the fastest library (fully validating)&#10;way: Serialize&#10;twitter.json: 224 µs&#10;citm_catalog.json: 475 µs&#10;canada.json: 4,850 µs&#10;jeopardy.json: 65,131 µs">
<rect class="nj-heat-1" x="685" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="138" text-anchor="middle">1.28</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="174" text-anchor="end">simdjson</text>
<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · validate&#10;2.03× the time of the fastest library (fully validating)&#10;way: D&#8203;OM&#10;twitter.json: 306 µs&#10;citm_catalog.json: 732 µs&#10;canada.json: 3,206 µs&#10;jeopardy.json: 113,452 µs">
<rect class="nj-heat-2" x="225" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="174" text-anchor="middle">2.03</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · sum&#10;1.13× the time of the fastest library (fully validating)&#10;twitter.json: 394 µs · D&#8203;OM&#10;citm_catalog.json: 977 µs · D&#8203;OM&#10;canada.json: 4,117 µs · D&#8203;OM&#10;jeopardy.json: 114,602 µs · On-Demand">
<rect class="nj-heat-0" x="317" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="174" text-anchor="middle">1.13</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · select&#10;1.32× the time of the fastest library (fully validating)&#10;way: D&#8203;OM&#10;twitter.json: 316 µs&#10;citm_catalog.json: 731 µs&#10;canada.json: 3,262 µs&#10;jeopardy.json: 120,808 µs">
<rect class="nj-heat-1" x="409" y="153" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="174" text-anchor="middle">1.32</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · select, checking less&#10;0.57× the time of the fastest fully validating library&#10;twitter.json: 181 µs · On-Demand structs&#10;citm_catalog.json: 495 µs · On-Demand&#10;canada.json: 702 µs · On-Demand&#10;jeopardy.json: 48,823 µs · On-Demand&#10;reads lazily: On-Demand reads only what you ask for and steps over the rest by matching brackets">
<rect class="nj-heat-0" x="455" y="153" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="168" text-anchor="middle">0.57</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="181" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · edit&#10;simdjson&#x27;s documents are read-only: it has no A&#8203;PI to change a value and write the result">
<rect class="nj-heat-na" x="501" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-tick" x="546" y="174">n/a</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · minify&#10;1.58× the time of the fastest library (fully validating)&#10;way: D&#8203;OM + to_string&#10;twitter.json: 783 µs&#10;citm_catalog.json: 1,395 µs&#10;canada.json: 8,303 µs&#10;jeopardy.json: 275,007 µs">
<rect class="nj-heat-2" x="593" y="153" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="174" text-anchor="middle">1.58</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · minify, checking less&#10;0.18× the time of the fastest fully validating library&#10;way: minify&#10;twitter.json: 105 µs&#10;citm_catalog.json: 269 µs&#10;canada.json: 337 µs&#10;jeopardy.json: 45,087 µs&#10;simdjson::minify() only removes whitespace, without parsing the values">
<rect class="nj-heat-0" x="639" y="153" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="168" text-anchor="middle">0.18</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="181" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · write&#10;2.00× the time of the fastest library (fully validating)&#10;way: to_string&#10;twitter.json: 389 µs&#10;citm_catalog.json: 656 µs&#10;canada.json: 4,896 µs&#10;jeopardy.json: 157,616 µs">
<rect class="nj-heat-2" x="685" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="174" text-anchor="middle">2.00</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="210" text-anchor="end">sonic-rs (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · validate&#10;1.88× the time of the fastest library (fully validating)&#10;way: IgnoredAny&#10;twitter.json: 501 µs&#10;citm_catalog.json: 970 µs&#10;canada.json: 2,249 µs&#10;jeopardy.json: 54,369 µs">
<rect class="nj-heat-2" x="225" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="210" text-anchor="middle">1.88</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · sum&#10;1.07× the time of the fastest library (fully validating)&#10;way: visitor&#10;twitter.json: 501 µs&#10;citm_catalog.json: 1,123 µs&#10;canada.json: 4,397 µs&#10;jeopardy.json: 59,583 µs">
<rect class="nj-heat-0" x="317" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="210" text-anchor="middle">1.07</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · select&#10;1.39× the time of the fastest library (fully validating)&#10;way: structs&#10;twitter.json: 504 µs&#10;citm_catalog.json: 1,033 µs&#10;canada.json: 2,328 µs&#10;jeopardy.json: 90,486 µs">
<rect class="nj-heat-1" x="409" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="210" text-anchor="middle">1.39</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · edit&#10;1.90× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 1,197 µs&#10;citm_catalog.json: 2,389 µs&#10;canada.json: 7,744 µs&#10;jeopardy.json: 390,952 µs">
<rect class="nj-heat-2" x="501" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="210" text-anchor="middle">1.90</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · minify&#10;1.73× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 1,000 µs&#10;citm_catalog.json: 2,097 µs&#10;canada.json: 7,795 µs&#10;jeopardy.json: 215,280 µs">
<rect class="nj-heat-2" x="593" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="210" text-anchor="middle">1.73</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · write&#10;1.94× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 434 µs&#10;citm_catalog.json: 927 µs&#10;canada.json: 3,987 µs&#10;jeopardy.json: 109,176 µs">
<rect class="nj-heat-2" x="685" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="210" text-anchor="middle">1.94</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="246" text-anchor="end">Boost.J&#8203;SON</text>
<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · validate&#10;1.79× the time of the fastest library (fully validating)&#10;way: S&#8203;AX (numbers: none)&#10;twitter.json: 571 µs&#10;citm_catalog.json: 910 µs&#10;canada.json: 1,684 µs&#10;jeopardy.json: 55,498 µs">
<rect class="nj-heat-2" x="225" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="246" text-anchor="middle">1.79</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · sum&#10;1.12× the time of the fastest library (fully validating)&#10;way: S&#8203;AX&#10;twitter.json: 580 µs&#10;citm_catalog.json: 928 µs&#10;canada.json: 5,809 µs&#10;jeopardy.json: 56,774 µs">
<rect class="nj-heat-0" x="317" y="225" width="90" height="34" rx="3"/>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · select&#10;2.24× the time of the fastest library (fully validating)&#10;twitter.json: 776 µs · parse_into structs&#10;citm_catalog.json: 1,389 µs · parse_into structs&#10;canada.json: 7,121 µs · parse&#10;jeopardy.json: 97,681 µs · parse_into structs">
<rect class="nj-heat-2" x="409" y="225" width="90" height="34" rx="3"/>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · edit&#10;2.39× the time of the fastest library (fully validating)&#10;way: parse&#10;twitter.json: 1,855 µs&#10;citm_catalog.json: 2,596 µs&#10;canada.json: 12,765 µs&#10;jeopardy.json: 350,286 µs">
<rect class="nj-heat-2" x="501" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="246" text-anchor="middle">2.39</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · minify&#10;2.68× the time of the fastest library (fully validating)&#10;way: parse + serialize&#10;twitter.json: 1,924 µs&#10;citm_catalog.json: 2,569 µs&#10;canada.json: 12,622 µs&#10;jeopardy.json: 329,090 µs">
<rect class="nj-heat-3" x="593" y="225" width="90" height="34" rx="3"/>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · write&#10;2.31× the time of the fastest library (fully validating)&#10;way: serialize&#10;twitter.json: 478 µs&#10;citm_catalog.json: 916 µs&#10;canada.json: 5,615 µs&#10;jeopardy.json: 141,846 µs">
<rect class="nj-heat-2" x="685" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="246" text-anchor="middle">2.31</text>
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<text class="nj-charts-rowlabel " x="216" y="282" text-anchor="end">simd-json (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · validate&#10;3.52× the time of the fastest library (fully validating)&#10;way: tape (copy)&#10;twitter.json: 567 µs&#10;citm_catalog.json: 1,430 µs&#10;canada.json: 4,359 µs&#10;jeopardy.json: 207,551 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="225" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="282" text-anchor="middle">3.52</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · sum&#10;1.80× the time of the fastest library (fully validating)&#10;way: visitor (copy)&#10;twitter.json: 681 µs&#10;citm_catalog.json: 1,650 µs&#10;canada.json: 5,083 µs&#10;jeopardy.json: 210,185 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-2" x="317" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="282" text-anchor="middle">1.80</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · select&#10;2.64× the time of the fastest library (fully validating)&#10;way: structs (copy)&#10;twitter.json: 679 µs&#10;citm_catalog.json: 1,731 µs&#10;canada.json: 5,144 µs&#10;jeopardy.json: 239,164 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="409" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="282" text-anchor="middle">2.64</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · edit&#10;2.88× the time of the fastest library (fully validating)&#10;twitter.json: 1,862 µs · borrowed (copy)&#10;citm_catalog.json: 4,194 µs · borrowed (copy)&#10;canada.json: 14,896 µs · owned (copy)&#10;jeopardy.json: 391,369 µs · borrowed (copy)&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="501" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="282" text-anchor="middle">2.88</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · minify&#10;3.38× the time of the fastest library (fully validating)&#10;way: borrowed (copy)&#10;twitter.json: 1,889 µs&#10;citm_catalog.json: 4,196 µs&#10;canada.json: 15,716 µs&#10;jeopardy.json: 414,377 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="593" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="282" text-anchor="middle">3.38</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · write&#10;2.21× the time of the fastest library (fully validating)&#10;way: borrowed&#10;twitter.json: 582 µs&#10;citm_catalog.json: 800 µs&#10;canada.json: 5,147 µs&#10;jeopardy.json: 122,623 µs">
<rect class="nj-heat-2" x="685" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="282" text-anchor="middle">2.21</text>
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<text class="nj-charts-rowlabel " x="216" y="318" text-anchor="end">serde_json (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · validate&#10;2.33× the time of the fastest library (fully validating)&#10;way: from_utf8 + IgnoredAny&#10;twitter.json: 624 µs&#10;citm_catalog.json: 1,440 µs&#10;canada.json: 2,406 µs&#10;jeopardy.json: 64,720 µs">
<rect class="nj-heat-2" x="225" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="247.5" y="318" text-anchor="middle">2.33</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · validate, checking less&#10;2.08× the time of the fastest fully validating library&#10;way: IgnoredAny&#10;twitter.json: 484 µs&#10;citm_catalog.json: 1,370 µs&#10;canada.json: 2,314 µs&#10;jeopardy.json: 58,247 µs&#10;trusts U&#8203;TF-8 in the strings it skips (from_slice); strings it reads are checked">
<rect class="nj-heat-2" x="271" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="292.5" y="312" text-anchor="middle">2.08</text>
<text class="nj-charts-cell nj-charts-cell--small" x="292.5" y="325" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · sum&#10;2.22× the time of the fastest library (fully validating)&#10;way: visitor&#10;twitter.json: 1,311 µs&#10;citm_catalog.json: 2,288 µs&#10;canada.json: 7,127 µs&#10;jeopardy.json: 129,497 µs">
<rect class="nj-heat-2" x="317" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="318" text-anchor="middle">2.22</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · select&#10;1.77× the time of the fastest library (fully validating)&#10;way: from_utf8 + structs&#10;twitter.json: 701 µs&#10;citm_catalog.json: 1,532 µs&#10;canada.json: 2,529 µs&#10;jeopardy.json: 107,316 µs">
<rect class="nj-heat-2" x="409" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="318" text-anchor="middle">1.77</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · edit&#10;4.54× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 4,042 µs&#10;citm_catalog.json: 6,586 µs&#10;canada.json: 16,631 µs&#10;jeopardy.json: 632,766 µs">
<rect class="nj-heat-3" x="501" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="318" text-anchor="middle">4.54</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · minify&#10;4.92× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 4,012 µs&#10;citm_catalog.json: 6,583 µs&#10;canada.json: 17,306 µs&#10;jeopardy.json: 509,702 µs">
<rect class="nj-heat-3" x="593" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="318" text-anchor="middle">4.92</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · write&#10;2.15× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 550 µs&#10;citm_catalog.json: 887 µs&#10;canada.json: 4,005 µs&#10;jeopardy.json: 134,163 µs">
<rect class="nj-heat-2" x="685" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="318" text-anchor="middle">2.15</text>
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<text class="nj-charts-rowlabel " x="216" y="354" text-anchor="end">Glaze</text>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · validate&#10;2.23× the time of the fastest library (fully validating)&#10;way: validate_json&#10;twitter.json: 588 µs&#10;citm_catalog.json: 1,431 µs&#10;canada.json: 1,867 µs&#10;jeopardy.json: 75,571 µs">
<rect class="nj-heat-2" x="225" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="354" text-anchor="middle">2.23</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · sum&#10;4.03× the time of the fastest library (fully validating)&#10;way: generic (double, strict)&#10;twitter.json: 2,427 µs&#10;citm_catalog.json: 3,972 µs&#10;canada.json: 12,165 µs&#10;jeopardy.json: 253,385 µs">
<rect class="nj-heat-3" x="317" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="339.5" y="354" text-anchor="middle">4.03</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · sum, checking less&#10;3.78× the time of the fastest fully validating library&#10;twitter.json: 2,427 µs · generic (double, strict) (validates fully)&#10;citm_catalog.json: 3,972 µs · generic (double, strict) (validates fully)&#10;canada.json: 12,165 µs · generic (double, strict) (validates fully)&#10;jeopardy.json: 196,582 µs · lazy_json&#10;reads lazily: lazy_json reads only what you ask for and steps over the rest">
<rect class="nj-heat-3" x="363" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="384.5" y="348" text-anchor="middle">3.78</text>
<text class="nj-charts-cell nj-charts-cell--small" x="384.5" y="361" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · select&#10;1.43× the time of the fastest library (fully validating)&#10;way: structs (validate_skipped)&#10;twitter.json: 544 µs&#10;citm_catalog.json: 1,368 µs&#10;canada.json: 1,924 µs&#10;jeopardy.json: 85,745 µs">
<rect class="nj-heat-1" x="409" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="354" text-anchor="middle">1.43</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · select, checking less&#10;0.62× the time of the fastest fully validating library&#10;way: structs&#10;twitter.json: 345 µs&#10;citm_catalog.json: 419 µs&#10;canada.json: 444 µs&#10;jeopardy.json: 66,442 µs&#10;reads into structs and steps over fields it doesn&#x27;t know without checking them (validate_skipped checks them too)">
<rect class="nj-heat-0" x="455" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="348" text-anchor="middle">0.62</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="361" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · edit&#10;5.53× the time of the fastest library (fully validating)&#10;way: generic (strict)&#10;twitter.json: 4,341 µs&#10;citm_catalog.json: 7,322 µs&#10;canada.json: 26,786 µs&#10;jeopardy.json: 725,881 µs">
<rect class="nj-heat-4" x="501" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="354" text-anchor="middle">5.53</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · minify&#10;5.77× the time of the fastest library (fully validating)&#10;way: generic (strict)&#10;twitter.json: 4,132 µs&#10;citm_catalog.json: 7,465 µs&#10;canada.json: 26,962 µs&#10;jeopardy.json: 528,811 µs">
<rect class="nj-heat-4" x="593" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="354" text-anchor="middle">5.77</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · minify, checking less&#10;0.70× the time of the fastest fully validating library&#10;way: minify_json&#10;twitter.json: 444 µs&#10;citm_catalog.json: 1,059 µs&#10;canada.json: 2,222 µs&#10;jeopardy.json: 91,153 µs&#10;minify_json only removes whitespace, without parsing the values">
<rect class="nj-heat-0" x="639" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="348" text-anchor="middle">0.70</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="361" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · write&#10;1.90× the time of the fastest library (fully validating)&#10;way: generic&#10;twitter.json: 399 µs&#10;citm_catalog.json: 748 µs&#10;canada.json: 4,220 µs&#10;jeopardy.json: 128,020 µs">
<rect class="nj-heat-2" x="685" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="354" text-anchor="middle">1.90</text>
</g>
<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="390" text-anchor="end">nlohmann/json json</text>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · validate&#10;2.77× the time of the fastest library (fully validating)&#10;way: accept&#10;twitter.json: 658 µs&#10;citm_catalog.json: 1,390 µs&#10;canada.json: 4,265 µs&#10;jeopardy.json: 71,982 µs">
<rect class="nj-heat-3" x="225" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="390" text-anchor="middle">2.77</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · sum&#10;1.44× the time of the fastest library (fully validating)&#10;way: sax&#10;twitter.json: 728 µs&#10;citm_catalog.json: 1,393 µs&#10;canada.json: 5,428 µs&#10;jeopardy.json: 89,481 µs">
<rect class="nj-heat-1" x="317" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="390" text-anchor="middle">1.44</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · select&#10;7.56× the time of the fastest library (fully validating)&#10;twitter.json: 3,602 µs · structs (from_json)&#10;citm_catalog.json: 5,124 µs · parse&#10;canada.json: 11,831 µs · parse&#10;jeopardy.json: 444,210 µs · parse">
<rect class="nj-heat-4" x="409" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="390" text-anchor="middle">7.56</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · edit&#10;3.99× the time of the fastest library (fully validating)&#10;twitter.json: 3,069 µs · ordered_json&#10;citm_catalog.json: 4,905 µs · ordered_json&#10;canada.json: 16,702 µs · parse&#10;jeopardy.json: 666,261 µs · ordered_json">
<rect class="nj-heat-3" x="501" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="390" text-anchor="middle">3.99</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · minify&#10;4.91× the time of the fastest library (fully validating)&#10;way: parse + dump&#10;twitter.json: 4,445 µs&#10;citm_catalog.json: 5,713 µs&#10;canada.json: 16,711 µs&#10;jeopardy.json: 543,033 µs">
<rect class="nj-heat-3" x="593" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="390" text-anchor="middle">4.91</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · write&#10;1.86× the time of the fastest library (fully validating)&#10;way: dump&#10;twitter.json: 451 µs&#10;citm_catalog.json: 628 µs&#10;canada.json: 4,506 µs&#10;jeopardy.json: 116,529 µs">
<rect class="nj-heat-2" x="685" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="390" text-anchor="middle">1.86</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="426" text-anchor="end">RapidJSON</text>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · validate&#10;4.94× the time of the fastest library (fully validating)&#10;twitter.json: 1,756 µs · insitu (copy untimed)&#10;citm_catalog.json: 1,971 µs · S&#8203;AX (default precision)&#10;canada.json: 4,118 µs · S&#8203;AX (string stream, default precision)&#10;jeopardy.json: 198,915 µs · insitu (copy untimed)">
<rect class="nj-heat-3" x="225" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="247.5" y="426" text-anchor="middle">4.94</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · validate, checking less&#10;3.76× the time of the fastest fully validating library&#10;twitter.json: 1,132 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,572 µs · S&#8203;AX (default precision) (no encoding check)&#10;canada.json: 4,083 µs · S&#8203;AX (string stream, default precision) (no encoding check)&#10;jeopardy.json: 131,204 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="271" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="292.5" y="420" text-anchor="middle">3.76</text>
<text class="nj-charts-cell nj-charts-cell--small" x="292.5" y="433" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · sum&#10;2.98× the time of the fastest library (fully validating)&#10;twitter.json: 1,816 µs · insitu (copy untimed)&#10;citm_catalog.json: 2,224 µs · S&#8203;AX&#10;canada.json: 10,719 µs · S&#8203;AX (string stream)&#10;jeopardy.json: 206,811 µs · insitu (copy untimed)">
<rect class="nj-heat-3" x="317" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="339.5" y="426" text-anchor="middle">2.98</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · sum, checking less&#10;2.28× the time of the fastest fully validating library&#10;twitter.json: 1,187 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,765 µs · S&#8203;AX (no encoding check)&#10;canada.json: 10,719 µs · S&#8203;AX (string stream) (validates fully)&#10;jeopardy.json: 135,945 µs · S&#8203;AX (string stream) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-2" x="363" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="384.5" y="420" text-anchor="middle">2.28</text>
<text class="nj-charts-cell nj-charts-cell--small" x="384.5" y="433" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · select&#10;4.20× the time of the fastest library (fully validating)&#10;way: insitu (copy untimed)&#10;twitter.json: 1,762 µs&#10;citm_catalog.json: 2,198 µs&#10;canada.json: 11,464 µs&#10;jeopardy.json: 209,290 µs">
<rect class="nj-heat-3" x="409" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="426" text-anchor="middle">4.20</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · select, checking less&#10;3.27× the time of the fastest fully validating library&#10;twitter.json: 1,144 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,817 µs · insitu (copy untimed) (no encoding check)&#10;canada.json: 11,464 µs · insitu (copy untimed) (validates fully)&#10;jeopardy.json: 142,852 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="455" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="420" text-anchor="middle">3.27</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="433" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · edit&#10;3.06× the time of the fastest library (fully validating)&#10;twitter.json: 2,635 µs · insitu (copy)&#10;citm_catalog.json: 3,103 µs · insitu (copy untimed)&#10;canada.json: 21,139 µs · insitu (copy untimed)&#10;jeopardy.json: 333,913 µs · insitu (copy untimed)&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="501" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="523.5" y="426" text-anchor="middle">3.06</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · edit, checking less&#10;2.60× the time of the fastest fully validating library&#10;twitter.json: 1,952 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 2,728 µs · insitu (copy untimed) (no encoding check)&#10;canada.json: 21,139 µs · insitu (copy untimed) (validates fully)&#10;jeopardy.json: 267,081 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="547" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="568.5" y="420" text-anchor="middle">2.60</text>
<text class="nj-charts-cell nj-charts-cell--small" x="568.5" y="433" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · minify&#10;3.61× the time of the fastest library (fully validating)&#10;twitter.json: 2,808 µs · S&#8203;AX to Writer&#10;citm_catalog.json: 2,975 µs · S&#8203;AX to Writer&#10;canada.json: 22,589 µs · Document + Writer&#10;jeopardy.json: 358,807 µs · S&#8203;AX to Writer (string stream)">
<rect class="nj-heat-3" x="593" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="426" text-anchor="middle">3.61</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · minify, checking less&#10;2.65× the time of the fastest fully validating library&#10;twitter.json: 2,022 µs · S&#8203;AX to Writer (raw numbers) (no encoding check)&#10;citm_catalog.json: 2,480 µs · S&#8203;AX to Writer (no encoding check)&#10;canada.json: 14,986 µs · S&#8203;AX to Writer (raw numbers) (validates fully)&#10;jeopardy.json: 261,527 µs · S&#8203;AX to Writer (string stream) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)&#10;copies each number&#x27;s text instead of formatting it (kParseNumbersAsStringsFlag)">
<rect class="nj-heat-3" x="639" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="420" text-anchor="middle">2.65</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="433" text-anchor="middle">U N</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · write&#10;2.79× the time of the fastest library (fully validating)&#10;way: Writer&#10;twitter.json: 627 µs&#10;citm_catalog.json: 1,008 µs&#10;canada.json: 9,596 µs&#10;jeopardy.json: 123,764 µs">
<rect class="nj-heat-3" x="685" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="426" text-anchor="middle">2.79</text>
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<text class="nj-charts-tick nj-charts-tick--l" x="8" y="472">time relative to the fastest fully validating library, less is better</text>
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<text class="nj-charts-cell nj-charts-cell--small" x="286" y="496" text-anchor="middle">2.5 to 5</text></g>
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<text class="nj-charts-cell nj-charts-cell--small" x="366" y="496" text-anchor="middle">5 and more</text></g>
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<text class="nj-charts-tick" x="440" y="496">n/a</text>
<text class="nj-charts-tick nj-charts-tick--l" x="468" y="496">no A&#8203;PI for it</text>
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<svg class="nj-fig nj-charts nj-charts--blog nj-charts--heat" viewBox="0 0 784 510" role="img" aria-labelledby="nj-blog-uc-x86-gcc nj-blog-uc-x86-gcc-d" xmlns="http://www.w3.org/2000/svg">
<title id="nj-blog-uc-x86-gcc">Use cases: time of each library relative to the fastest, x86-64 with G&#8203;CC 16.2</title>
<desc id="nj-blog-uc-x86-gcc-d">Table of relative times, libraries by use case. nlohmann/json json_document validate: 1.00; nlohmann/json json_document sum: 1.08; nlohmann/json json_document select: 1.00; nlohmann/json json_document edit: 1.00 (0.79 doing less, N); nlohmann/json json_document minify: 1.00 (0.80 doing less, N); nlohmann/json json_document write: 1.00 (0.64 doing less, N); yyjson validate: 1.94; yyjson sum: 1.14; yyjson select: 1.18; yyjson edit: 1.37; yyjson minify: 1.17 (0.95 doing less, N); yyjson write: 1.11; sonic-cpp validate: no fully validating way (2.32 doing less, U); sonic-cpp sum: no fully validating way (1.24 doing less, U); sonic-cpp select: no fully validating way (1.45 doing less, U); sonic-cpp edit: no fully validating way (1.21 doing less, U); sonic-cpp minify: no fully validating way (1.36 doing less, U); sonic-cpp write: 1.45; simdjson validate: 2.11; simdjson sum: 1.00; simdjson select: 1.27 (0.54 doing less, P); simdjson edit: n/a; simdjson minify: 1.54 (0.17 doing less, P); simdjson write: 2.10; sonic-rs (Rust) validate: 1.93; sonic-rs (Rust) sum: 1.13; sonic-rs (Rust) select: 1.34; sonic-rs (Rust) edit: 1.90; sonic-rs (Rust) minify: 1.71; sonic-rs (Rust) write: 2.04; Boost.J&#8203;SON validate: 1.99; Boost.J&#8203;SON sum: 1.27; Boost.J&#8203;SON select: 2.20; Boost.J&#8203;SON edit: 2.30; Boost.J&#8203;SON minify: 2.65; Boost.J&#8203;SON write: 2.36; simd-json (Rust) validate: 3.62; simd-json (Rust) sum: 1.91; simd-json (Rust) select: 2.56; simd-json (Rust) edit: 2.87; simd-json (Rust) minify: 3.35; simd-json (Rust) write: 2.32; RapidJSON validate: 3.71 (3.41 doing less, U); RapidJSON sum: 2.23 (2.09 doing less, U); RapidJSON select: 2.91 (2.73 doing less, U); RapidJSON edit: 2.41 (2.34 doing less, U); RapidJSON minify: 2.68 (2.42 doing less, U N); RapidJSON write: 2.97; serde_json (Rust) validate: 2.39 (2.14 doing less, U); serde_json (Rust) sum: 2.36; serde_json (Rust) select: 1.71; serde_json (Rust) edit: 4.53; serde_json (Rust) minify: 4.89; serde_json (Rust) write: 2.25; Glaze validate: 2.86; Glaze sum: 4.16; Glaze select: 1.79 (0.58 doing less, P); Glaze edit: 4.47; Glaze minify: 4.81 (0.78 doing less, P); Glaze write: 1.96; nlohmann/json json validate: 2.96; nlohmann/json json sum: 1.70; nlohmann/json json select: 7.12; nlohmann/json json edit: 3.83; nlohmann/json json minify: 4.79; nlohmann/json json write: 1.91.</desc>
<text class="nj-charts-tick" x="270" y="34">validate</text>
<text class="nj-charts-tick" x="362" y="34">sum</text>
<text class="nj-charts-tick" x="454" y="34">select</text>
<text class="nj-charts-tick" x="546" y="34">edit</text>
<text class="nj-charts-tick" x="638" y="34">minify</text>
<text class="nj-charts-tick" x="730" y="34">write</text>
<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="66" text-anchor="end">nlohmann/json json_document</text>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · validate&#10;1.00× the time of the fastest library (fully validating)&#10;way: accept&#10;twitter.json: 258 µs&#10;citm_catalog.json: 513 µs&#10;canada.json: 934 µs&#10;jeopardy.json: 34,514 µs">
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<text class="nj-charts-cell" x="270" y="66" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · sum&#10;1.08× the time of the fastest library (fully validating)&#10;way: parse&#10;twitter.json: 398 µs&#10;citm_catalog.json: 972 µs&#10;canada.json: 3,501 µs&#10;jeopardy.json: 89,756 µs">
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<text class="nj-charts-cell" x="362" y="66" text-anchor="middle">1.08</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · select&#10;1.00× the time of the fastest library (fully validating)&#10;twitter.json: 333 µs · structs (from_json)&#10;citm_catalog.json: 828 µs · parse&#10;canada.json: 1,368 µs · parse&#10;jeopardy.json: 89,876 µs · parse">
<rect class="nj-heat-0" x="409" y="45" width="90" height="34" rx="3"/>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · edit&#10;1.00× the time of the fastest library (fully validating)&#10;way: editable&#10;twitter.json: 536 µs&#10;citm_catalog.json: 1,162 µs&#10;canada.json: 5,567 µs&#10;jeopardy.json: 192,323 µs">
<rect class="nj-heat-0" x="501" y="45" width="44" height="34" rx="3"/>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · edit, checking less&#10;0.79× the time of the fastest fully validating library&#10;twitter.json: 530 µs · editable (source numbers) (validates fully)&#10;citm_catalog.json: 1,149 µs · editable (source numbers) (validates fully)&#10;canada.json: 2,188 µs · editable (source numbers) (validates fully)&#10;jeopardy.json: 192,323 µs · editable (validates fully)&#10;copies each number&#x27;s text instead of formatting it (number_format::source)">
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<text class="nj-charts-cell" x="568.5" y="60" text-anchor="middle">0.79</text>
<text class="nj-charts-cell nj-charts-cell--small" x="568.5" y="73" text-anchor="middle">N</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · minify&#10;1.00× the time of the fastest library (fully validating)&#10;way: parse + dump&#10;twitter.json: 518 µs&#10;citm_catalog.json: 1,045 µs&#10;canada.json: 5,240 µs&#10;jeopardy.json: 143,737 µs">
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<text class="nj-charts-cell" x="660.5" y="60" text-anchor="middle">0.80</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="73" text-anchor="middle">N</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · write&#10;1.00× the time of the fastest library (fully validating)&#10;way: dump&#10;twitter.json: 156 µs&#10;citm_catalog.json: 251 µs&#10;canada.json: 3,842 µs&#10;jeopardy.json: 67,769 µs">
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · write, checking less&#10;0.64× the time of the fastest fully validating library&#10;way: dump (source numbers)&#10;twitter.json: 140 µs (validates fully)&#10;citm_catalog.json: 230 µs (validates fully)&#10;canada.json: 823 µs (validates fully)&#10;jeopardy.json: 65,376 µs (validates fully)&#10;copies each number&#x27;s text instead of formatting it (number_format::source)">
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<text class="nj-charts-cell" x="752.5" y="60" text-anchor="middle">0.64</text>
<text class="nj-charts-cell nj-charts-cell--small" x="752.5" y="73" text-anchor="middle">N</text>
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<text class="nj-charts-rowlabel " x="216" y="102" text-anchor="end">yyjson</text>
<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · validate&#10;1.94× the time of the fastest library (fully validating)&#10;twitter.json: 352 µs · insitu (copy untimed)&#10;citm_catalog.json: 837 µs · insitu (copy untimed)&#10;canada.json: 2,199 µs · read (raw numbers)&#10;jeopardy.json: 93,043 µs · insitu (copy untimed)">
<rect class="nj-heat-2" x="225" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="102" text-anchor="middle">1.94</text>
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<text class="nj-charts-cell" x="362" y="102" text-anchor="middle">1.14</text>
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<text class="nj-charts-cell" x="454" y="102" text-anchor="middle">1.18</text>
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<text class="nj-charts-cell" x="660.5" y="96" text-anchor="middle">0.95</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="109" text-anchor="middle">N</text>
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<text class="nj-charts-cell" x="730" y="102" text-anchor="middle">1.11</text>
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<text class="nj-charts-rowlabel " x="216" y="138" text-anchor="end">sonic-cpp</text>
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<text class="nj-charts-cell" x="270" y="132" text-anchor="middle">2.32</text>
<text class="nj-charts-cell nj-charts-cell--small" x="270" y="145" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · sum, checking less&#10;1.24× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 456 µs&#10;citm_catalog.json: 1,115 µs&#10;canada.json: 3,980 µs&#10;jeopardy.json: 105,081 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
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<text class="nj-charts-cell nj-charts-cell--small" x="546" y="145" text-anchor="middle">U</text>
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<text class="nj-charts-cell nj-charts-cell--small" x="638" y="145" text-anchor="middle">U</text>
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<rect class="nj-heat-1" x="409" y="153" width="44" height="34" rx="3"/>
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<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="181" text-anchor="middle">P</text>
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<rect class="nj-heat-2" x="593" y="153" width="44" height="34" rx="3"/>
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<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="181" text-anchor="middle">P</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · write&#10;2.10× the time of the fastest library (fully validating)&#10;way: to_string&#10;twitter.json: 361 µs&#10;citm_catalog.json: 614 µs&#10;canada.json: 5,609 µs&#10;jeopardy.json: 158,492 µs">
<rect class="nj-heat-2" x="685" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="174" text-anchor="middle">2.10</text>
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<text class="nj-charts-rowlabel " x="216" y="210" text-anchor="end">sonic-rs (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · validate&#10;1.93× the time of the fastest library (fully validating)&#10;way: IgnoredAny&#10;twitter.json: 501 µs&#10;citm_catalog.json: 970 µs&#10;canada.json: 2,249 µs&#10;jeopardy.json: 54,369 µs">
<rect class="nj-heat-2" x="225" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="210" text-anchor="middle">1.93</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · sum&#10;1.13× the time of the fastest library (fully validating)&#10;way: visitor&#10;twitter.json: 501 µs&#10;citm_catalog.json: 1,123 µs&#10;canada.json: 4,397 µs&#10;jeopardy.json: 59,583 µs">
<rect class="nj-heat-0" x="317" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="210" text-anchor="middle">1.13</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · select&#10;1.34× the time of the fastest library (fully validating)&#10;way: structs&#10;twitter.json: 504 µs&#10;citm_catalog.json: 1,033 µs&#10;canada.json: 2,328 µs&#10;jeopardy.json: 90,486 µs">
<rect class="nj-heat-1" x="409" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="210" text-anchor="middle">1.34</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · edit&#10;1.90× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 1,197 µs&#10;citm_catalog.json: 2,389 µs&#10;canada.json: 7,744 µs&#10;jeopardy.json: 390,952 µs">
<rect class="nj-heat-2" x="501" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="210" text-anchor="middle">1.90</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · minify&#10;1.71× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 1,000 µs&#10;citm_catalog.json: 2,097 µs&#10;canada.json: 7,795 µs&#10;jeopardy.json: 215,280 µs">
<rect class="nj-heat-2" x="593" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="210" text-anchor="middle">1.71</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · write&#10;2.04× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 434 µs&#10;citm_catalog.json: 927 µs&#10;canada.json: 3,987 µs&#10;jeopardy.json: 109,176 µs">
<rect class="nj-heat-2" x="685" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="210" text-anchor="middle">2.04</text>
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<text class="nj-charts-rowlabel " x="216" y="246" text-anchor="end">Boost.J&#8203;SON</text>
<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · validate&#10;1.99× the time of the fastest library (fully validating)&#10;way: S&#8203;AX (numbers: none)&#10;twitter.json: 690 µs&#10;citm_catalog.json: 917 µs&#10;canada.json: 1,676 µs&#10;jeopardy.json: 62,781 µs">
<rect class="nj-heat-2" x="225" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="246" text-anchor="middle">1.99</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · sum&#10;1.27× the time of the fastest library (fully validating)&#10;way: S&#8203;AX&#10;twitter.json: 699 µs&#10;citm_catalog.json: 957 µs&#10;canada.json: 5,835 µs&#10;jeopardy.json: 59,656 µs">
<rect class="nj-heat-1" x="317" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="246" text-anchor="middle">1.27</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · select&#10;2.20× the time of the fastest library (fully validating)&#10;twitter.json: 887 µs · parse_into structs&#10;citm_catalog.json: 1,270 µs · parse_into structs&#10;canada.json: 7,292 µs · parse&#10;jeopardy.json: 95,866 µs · parse_into structs">
<rect class="nj-heat-2" x="409" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="246" text-anchor="middle">2.20</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · edit&#10;2.30× the time of the fastest library (fully validating)&#10;way: parse&#10;twitter.json: 1,767 µs&#10;citm_catalog.json: 2,493 µs&#10;canada.json: 12,767 µs&#10;jeopardy.json: 331,310 µs">
<rect class="nj-heat-2" x="501" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="246" text-anchor="middle">2.30</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · minify&#10;2.65× the time of the fastest library (fully validating)&#10;way: parse + serialize&#10;twitter.json: 1,974 µs&#10;citm_catalog.json: 2,525 µs&#10;canada.json: 12,748 µs&#10;jeopardy.json: 314,299 µs">
<rect class="nj-heat-3" x="593" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="246" text-anchor="middle">2.65</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · write&#10;2.36× the time of the fastest library (fully validating)&#10;way: serialize&#10;twitter.json: 469 µs&#10;citm_catalog.json: 830 µs&#10;canada.json: 5,659 µs&#10;jeopardy.json: 144,174 µs">
<rect class="nj-heat-2" x="685" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="246" text-anchor="middle">2.36</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="282" text-anchor="end">simd-json (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · validate&#10;3.62× the time of the fastest library (fully validating)&#10;way: tape (copy)&#10;twitter.json: 567 µs&#10;citm_catalog.json: 1,430 µs&#10;canada.json: 4,359 µs&#10;jeopardy.json: 207,551 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="225" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="282" text-anchor="middle">3.62</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · sum&#10;1.91× the time of the fastest library (fully validating)&#10;way: visitor (copy)&#10;twitter.json: 681 µs&#10;citm_catalog.json: 1,650 µs&#10;canada.json: 5,083 µs&#10;jeopardy.json: 210,185 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-2" x="317" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="282" text-anchor="middle">1.91</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · select&#10;2.56× the time of the fastest library (fully validating)&#10;way: structs (copy)&#10;twitter.json: 679 µs&#10;citm_catalog.json: 1,731 µs&#10;canada.json: 5,144 µs&#10;jeopardy.json: 239,164 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="409" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="282" text-anchor="middle">2.56</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · edit&#10;2.87× the time of the fastest library (fully validating)&#10;twitter.json: 1,862 µs · borrowed (copy)&#10;citm_catalog.json: 4,194 µs · borrowed (copy)&#10;canada.json: 14,896 µs · owned (copy)&#10;jeopardy.json: 391,369 µs · borrowed (copy)&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="501" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="282" text-anchor="middle">2.87</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · minify&#10;3.35× the time of the fastest library (fully validating)&#10;way: borrowed (copy)&#10;twitter.json: 1,889 µs&#10;citm_catalog.json: 4,196 µs&#10;canada.json: 15,716 µs&#10;jeopardy.json: 414,377 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="593" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="282" text-anchor="middle">3.35</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · write&#10;2.32× the time of the fastest library (fully validating)&#10;way: borrowed&#10;twitter.json: 582 µs&#10;citm_catalog.json: 800 µs&#10;canada.json: 5,147 µs&#10;jeopardy.json: 122,623 µs">
<rect class="nj-heat-2" x="685" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="282" text-anchor="middle">2.32</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="318" text-anchor="end">RapidJSON</text>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · validate&#10;3.71× the time of the fastest library (fully validating)&#10;twitter.json: 1,166 µs · insitu (copy untimed)&#10;citm_catalog.json: 1,553 µs · S&#8203;AX (string stream, default precision)&#10;canada.json: 3,875 µs · S&#8203;AX (string stream, default precision)&#10;jeopardy.json: 114,704 µs · insitu (copy untimed)">
<rect class="nj-heat-3" x="225" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="247.5" y="318" text-anchor="middle">3.71</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · validate, checking less&#10;3.41× the time of the fastest fully validating library&#10;twitter.json: 1,012 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,434 µs · S&#8203;AX (default precision) (no encoding check)&#10;canada.json: 3,875 µs · S&#8203;AX (string stream, default precision) (validates fully)&#10;jeopardy.json: 102,635 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="271" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="292.5" y="312" text-anchor="middle">3.41</text>
<text class="nj-charts-cell nj-charts-cell--small" x="292.5" y="325" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · sum&#10;2.23× the time of the fastest library (fully validating)&#10;twitter.json: 1,221 µs · insitu (copy untimed)&#10;citm_catalog.json: 1,717 µs · S&#8203;AX (string stream)&#10;canada.json: 9,435 µs · S&#8203;AX (string stream)&#10;jeopardy.json: 112,158 µs · insitu (copy untimed)">
<rect class="nj-heat-2" x="317" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="339.5" y="318" text-anchor="middle">2.23</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · sum, checking less&#10;2.09× the time of the fastest fully validating library&#10;twitter.json: 1,063 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,635 µs · S&#8203;AX (string stream) (no encoding check)&#10;canada.json: 9,368 µs · S&#8203;AX (string stream) (no encoding check)&#10;jeopardy.json: 105,845 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-2" x="363" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="384.5" y="312" text-anchor="middle">2.09</text>
<text class="nj-charts-cell nj-charts-cell--small" x="384.5" y="325" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · select&#10;2.91× the time of the fastest library (fully validating)&#10;twitter.json: 1,180 µs · insitu (copy untimed)&#10;citm_catalog.json: 1,693 µs · insitu (copy untimed)&#10;canada.json: 10,390 µs · Document (string stream)&#10;jeopardy.json: 116,394 µs · insitu (copy untimed)">
<rect class="nj-heat-3" x="409" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="318" text-anchor="middle">2.91</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · select, checking less&#10;2.73× the time of the fastest fully validating library&#10;twitter.json: 1,022 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,648 µs · insitu (copy untimed) (no encoding check)&#10;canada.json: 10,390 µs · Document (string stream) (validates fully)&#10;jeopardy.json: 108,290 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="455" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="312" text-anchor="middle">2.73</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="325" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · edit&#10;2.41× the time of the fastest library (fully validating)&#10;twitter.json: 1,865 µs · insitu (copy untimed)&#10;citm_catalog.json: 2,616 µs · insitu (copy untimed)&#10;canada.json: 18,812 µs · Document (string stream)&#10;jeopardy.json: 245,724 µs · insitu (copy untimed)">
<rect class="nj-heat-2" x="501" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="523.5" y="318" text-anchor="middle">2.41</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · edit, checking less&#10;2.34× the time of the fastest fully validating library&#10;twitter.json: 1,737 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 2,595 µs · insitu (copy untimed) (no encoding check)&#10;canada.json: 18,812 µs · Document (string stream) (validates fully)&#10;jeopardy.json: 234,669 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-2" x="547" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="568.5" y="312" text-anchor="middle">2.34</text>
<text class="nj-charts-cell nj-charts-cell--small" x="568.5" y="325" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · minify&#10;2.68× the time of the fastest library (fully validating)&#10;way: S&#8203;AX to Writer (string stream)&#10;twitter.json: 1,949 µs&#10;citm_catalog.json: 2,382 µs&#10;canada.json: 19,548 µs&#10;jeopardy.json: 231,979 µs">
<rect class="nj-heat-3" x="593" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="318" text-anchor="middle">2.68</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · minify, checking less&#10;2.42× the time of the fastest fully validating library&#10;twitter.json: 1,880 µs · S&#8203;AX to Writer (string stream) (no encoding check)&#10;citm_catalog.json: 2,314 µs · S&#8203;AX to Writer (string stream) (no encoding check)&#10;canada.json: 14,400 µs · S&#8203;AX to Writer (raw numbers) (validates fully)&#10;jeopardy.json: 224,249 µs · S&#8203;AX to Writer (string stream) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)&#10;copies each number&#x27;s text instead of formatting it (kParseNumbersAsStringsFlag)">
<rect class="nj-heat-2" x="639" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="312" text-anchor="middle">2.42</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="325" text-anchor="middle">U N</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · write&#10;2.97× the time of the fastest library (fully validating)&#10;way: Writer&#10;twitter.json: 678 µs&#10;citm_catalog.json: 979 µs&#10;canada.json: 9,095 µs&#10;jeopardy.json: 131,408 µs">
<rect class="nj-heat-3" x="685" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="318" text-anchor="middle">2.97</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="354" text-anchor="end">serde_json (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · validate&#10;2.39× the time of the fastest library (fully validating)&#10;way: from_utf8 + IgnoredAny&#10;twitter.json: 624 µs&#10;citm_catalog.json: 1,440 µs&#10;canada.json: 2,406 µs&#10;jeopardy.json: 64,720 µs">
<rect class="nj-heat-2" x="225" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="247.5" y="354" text-anchor="middle">2.39</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · validate, checking less&#10;2.14× the time of the fastest fully validating library&#10;way: IgnoredAny&#10;twitter.json: 484 µs&#10;citm_catalog.json: 1,370 µs&#10;canada.json: 2,314 µs&#10;jeopardy.json: 58,247 µs&#10;trusts U&#8203;TF-8 in the strings it skips (from_slice); strings it reads are checked">
<rect class="nj-heat-2" x="271" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="292.5" y="348" text-anchor="middle">2.14</text>
<text class="nj-charts-cell nj-charts-cell--small" x="292.5" y="361" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · sum&#10;2.36× the time of the fastest library (fully validating)&#10;way: visitor&#10;twitter.json: 1,311 µs&#10;citm_catalog.json: 2,288 µs&#10;canada.json: 7,127 µs&#10;jeopardy.json: 129,497 µs">
<rect class="nj-heat-2" x="317" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="354" text-anchor="middle">2.36</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · select&#10;1.71× the time of the fastest library (fully validating)&#10;way: from_utf8 + structs&#10;twitter.json: 701 µs&#10;citm_catalog.json: 1,532 µs&#10;canada.json: 2,529 µs&#10;jeopardy.json: 107,316 µs">
<rect class="nj-heat-2" x="409" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="354" text-anchor="middle">1.71</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · edit&#10;4.53× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 4,042 µs&#10;citm_catalog.json: 6,586 µs&#10;canada.json: 16,631 µs&#10;jeopardy.json: 632,766 µs">
<rect class="nj-heat-3" x="501" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="354" text-anchor="middle">4.53</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · minify&#10;4.89× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 4,012 µs&#10;citm_catalog.json: 6,583 µs&#10;canada.json: 17,306 µs&#10;jeopardy.json: 509,702 µs">
<rect class="nj-heat-3" x="593" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="354" text-anchor="middle">4.89</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · write&#10;2.25× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 550 µs&#10;citm_catalog.json: 887 µs&#10;canada.json: 4,005 µs&#10;jeopardy.json: 134,163 µs">
<rect class="nj-heat-2" x="685" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="354" text-anchor="middle">2.25</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="390" text-anchor="end">Glaze</text>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · validate&#10;2.86× the time of the fastest library (fully validating)&#10;way: validate_json&#10;twitter.json: 712 µs&#10;citm_catalog.json: 1,983 µs&#10;canada.json: 2,625 µs&#10;jeopardy.json: 76,759 µs">
<rect class="nj-heat-3" x="225" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="390" text-anchor="middle">2.86</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · sum&#10;4.16× the time of the fastest library (fully validating)&#10;way: generic (double, strict)&#10;twitter.json: 2,483 µs&#10;citm_catalog.json: 4,413 µs&#10;canada.json: 10,532 µs&#10;jeopardy.json: 231,505 µs">
<rect class="nj-heat-3" x="317" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="390" text-anchor="middle">4.16</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · select&#10;1.79× the time of the fastest library (fully validating)&#10;way: structs (validate_skipped)&#10;twitter.json: 606 µs&#10;citm_catalog.json: 2,476 µs&#10;canada.json: 2,557 µs&#10;jeopardy.json: 89,957 µs">
<rect class="nj-heat-2" x="409" y="369" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="390" text-anchor="middle">1.79</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · select, checking less&#10;0.58× the time of the fastest fully validating library&#10;way: structs&#10;twitter.json: 344 µs&#10;citm_catalog.json: 402 µs&#10;canada.json: 417 µs&#10;jeopardy.json: 67,467 µs&#10;reads into structs and steps over fields it doesn&#x27;t know without checking them (validate_skipped checks them too)">
<rect class="nj-heat-0" x="455" y="369" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="384" text-anchor="middle">0.58</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="397" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · edit&#10;4.47× the time of the fastest library (fully validating)&#10;way: generic (strict)&#10;twitter.json: 3,389 µs&#10;citm_catalog.json: 6,002 µs&#10;canada.json: 21,598 µs&#10;jeopardy.json: 607,767 µs">
<rect class="nj-heat-3" x="501" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="390" text-anchor="middle">4.47</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · minify&#10;4.81× the time of the fastest library (fully validating)&#10;way: generic (strict)&#10;twitter.json: 3,685 µs&#10;citm_catalog.json: 5,942 µs&#10;canada.json: 22,138 µs&#10;jeopardy.json: 450,322 µs">
<rect class="nj-heat-3" x="593" y="369" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="390" text-anchor="middle">4.81</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · minify, checking less&#10;0.78× the time of the fastest fully validating library&#10;way: minify_json&#10;twitter.json: 442 µs&#10;citm_catalog.json: 1,292 µs&#10;canada.json: 2,726 µs&#10;jeopardy.json: 97,377 µs&#10;minify_json only removes whitespace, without parsing the values">
<rect class="nj-heat-0" x="639" y="369" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="384" text-anchor="middle">0.78</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="397" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · write&#10;1.96× the time of the fastest library (fully validating)&#10;way: generic&#10;twitter.json: 381 µs&#10;citm_catalog.json: 730 µs&#10;canada.json: 4,071 µs&#10;jeopardy.json: 131,946 µs">
<rect class="nj-heat-2" x="685" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="390" text-anchor="middle">1.96</text>
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<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="426" text-anchor="end">nlohmann/json json</text>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · validate&#10;2.96× the time of the fastest library (fully validating)&#10;way: accept&#10;twitter.json: 683 µs&#10;citm_catalog.json: 1,419 µs&#10;canada.json: 4,559 µs&#10;jeopardy.json: 74,331 µs">
<rect class="nj-heat-3" x="225" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="426" text-anchor="middle">2.96</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · sum&#10;1.70× the time of the fastest library (fully validating)&#10;way: sax&#10;twitter.json: 814 µs&#10;citm_catalog.json: 1,666 µs&#10;canada.json: 5,690 µs&#10;jeopardy.json: 97,414 µs">
<rect class="nj-heat-2" x="317" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="426" text-anchor="middle">1.70</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · select&#10;7.12× the time of the fastest library (fully validating)&#10;twitter.json: 3,360 µs · structs (from_json)&#10;citm_catalog.json: 5,268 µs · structs (from_json)&#10;canada.json: 12,006 µs · structs (from_json)&#10;jeopardy.json: 410,221 µs · parse">
<rect class="nj-heat-4" x="409" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="426" text-anchor="middle">7.12</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · edit&#10;3.83× the time of the fastest library (fully validating)&#10;way: ordered_json&#10;twitter.json: 2,832 µs&#10;citm_catalog.json: 4,970 µs&#10;canada.json: 15,806 µs&#10;jeopardy.json: 647,704 µs">
<rect class="nj-heat-3" x="501" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="426" text-anchor="middle">3.83</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · minify&#10;4.79× the time of the fastest library (fully validating)&#10;way: parse + dump&#10;twitter.json: 4,196 µs&#10;citm_catalog.json: 5,806 µs&#10;canada.json: 16,626 µs&#10;jeopardy.json: 529,560 µs">
<rect class="nj-heat-3" x="593" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="426" text-anchor="middle">4.79</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · write&#10;1.91× the time of the fastest library (fully validating)&#10;way: dump&#10;twitter.json: 444 µs&#10;citm_catalog.json: 640 µs&#10;canada.json: 4,089 µs&#10;jeopardy.json: 117,316 µs">
<rect class="nj-heat-2" x="685" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="426" text-anchor="middle">1.91</text>
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<text class="nj-charts-tick nj-charts-tick--l" x="8" y="472">time relative to the fastest fully validating library, less is better</text>
<g><rect class="nj-heat-0" x="8" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="46" y="496" text-anchor="middle">below 1.15</text></g>
<g><rect class="nj-heat-1" x="88" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="126" y="496" text-anchor="middle">1.15 to 1.5</text></g>
<g><rect class="nj-heat-2" x="168" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="206" y="496" text-anchor="middle">1.5 to 2.5</text></g>
<g><rect class="nj-heat-3" x="248" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="286" y="496" text-anchor="middle">2.5 to 5</text></g>
<g><rect class="nj-heat-4" x="328" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="366" y="496" text-anchor="middle">5 and more</text></g>
<rect class="nj-heat-na" x="420" y="482" width="40" height="20" rx="3"/>
<text class="nj-charts-tick" x="440" y="496">n/a</text>
<text class="nj-charts-tick nj-charts-tick--l" x="468" y="496">no A&#8203;PI for it</text>
</svg>
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<svg class="nj-fig nj-charts nj-charts--blog nj-charts--heat" viewBox="0 0 784 510" role="img" aria-labelledby="nj-blog-uc-x86-gcc13 nj-blog-uc-x86-gcc13-d" xmlns="http://www.w3.org/2000/svg">
<title id="nj-blog-uc-x86-gcc13">Use cases: time of each library relative to the fastest, x86-64 with G&#8203;CC 13</title>
<desc id="nj-blog-uc-x86-gcc13-d">Table of relative times, libraries by use case. nlohmann/json json_document validate: 1.00; nlohmann/json json_document sum: 1.08; nlohmann/json json_document select: 1.00; nlohmann/json json_document edit: 1.00 (0.83 doing less, N); nlohmann/json json_document minify: 1.00 (0.83 doing less, N); nlohmann/json json_document write: 1.00 (0.71 doing less, N); yyjson validate: 1.81; yyjson sum: 1.28; yyjson select: 1.22; yyjson edit: 1.49; yyjson minify: 1.27 (0.97 doing less, N); yyjson write: 1.14; sonic-cpp validate: no fully validating way (2.24 doing less, U); sonic-cpp sum: no fully validating way (1.28 doing less, U); sonic-cpp select: no fully validating way (1.53 doing less, U); sonic-cpp edit: no fully validating way (1.26 doing less, U); sonic-cpp minify: no fully validating way (1.42 doing less, U); sonic-cpp write: 1.50; simdjson validate: 2.01; simdjson sum: 1.00; simdjson select: 1.35 (0.57 doing less, P); simdjson edit: n/a; simdjson minify: 1.58 (0.22 doing less, P); simdjson write: 2.07; sonic-rs (Rust) validate: 1.79; sonic-rs (Rust) sum: 1.11; sonic-rs (Rust) select: 1.37; sonic-rs (Rust) edit: 1.91; sonic-rs (Rust) minify: 1.73; sonic-rs (Rust) write: 2.07; Boost.J&#8203;SON validate: 1.88; Boost.J&#8203;SON sum: 1.33; Boost.J&#8203;SON select: 2.30; Boost.J&#8203;SON edit: 2.55; Boost.J&#8203;SON minify: 2.92; Boost.J&#8203;SON write: 2.56; simd-json (Rust) validate: 3.35; simd-json (Rust) sum: 1.88; simd-json (Rust) select: 2.61; simd-json (Rust) edit: 2.89; simd-json (Rust) minify: 3.39; simd-json (Rust) write: 2.35; serde_json (Rust) validate: 2.22 (1.98 doing less, U); serde_json (Rust) sum: 2.32; serde_json (Rust) select: 1.75; serde_json (Rust) edit: 4.55; serde_json (Rust) minify: 4.94; serde_json (Rust) write: 2.28; Glaze validate: 2.21; Glaze sum: 4.04; Glaze select: 1.44 (0.60 doing less, P); Glaze edit: 4.85; Glaze minify: 5.10 (0.73 doing less, P); Glaze write: 1.84; nlohmann/json json validate: 2.74; nlohmann/json json sum: 1.67; nlohmann/json json select: 7.24; nlohmann/json json edit: 3.81; nlohmann/json json minify: 4.79; nlohmann/json json write: 1.99; RapidJSON validate: 4.50 (3.40 doing less, U); RapidJSON sum: 2.98 (2.29 doing less, U); RapidJSON select: 3.84 (3.06 doing less, U); RapidJSON edit: 2.92 (2.58 doing less, U); RapidJSON minify: 3.64 (2.64 doing less, U N); RapidJSON write: 3.11.</desc>
<text class="nj-charts-tick" x="270" y="34">validate</text>
<text class="nj-charts-tick" x="362" y="34">sum</text>
<text class="nj-charts-tick" x="454" y="34">select</text>
<text class="nj-charts-tick" x="546" y="34">edit</text>
<text class="nj-charts-tick" x="638" y="34">minify</text>
<text class="nj-charts-tick" x="730" y="34">write</text>
<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="66" text-anchor="end">nlohmann/json json_document</text>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · validate&#10;1.00× the time of the fastest library (fully validating)&#10;way: accept&#10;twitter.json: 271 µs&#10;citm_catalog.json: 609 µs&#10;canada.json: 1,011 µs&#10;jeopardy.json: 34,722 µs">
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<text class="nj-charts-cell" x="270" y="66" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · sum&#10;1.08× the time of the fastest library (fully validating)&#10;way: parse&#10;twitter.json: 392 µs&#10;citm_catalog.json: 946 µs&#10;canada.json: 3,888 µs&#10;jeopardy.json: 89,044 µs">
<rect class="nj-heat-0" x="317" y="45" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="66" text-anchor="middle">1.08</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · select&#10;1.00× the time of the fastest library (fully validating)&#10;way: parse&#10;twitter.json: 332 µs&#10;citm_catalog.json: 765 µs&#10;canada.json: 1,390 µs&#10;jeopardy.json: 88,202 µs">
<rect class="nj-heat-0" x="409" y="45" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="66" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · edit&#10;1.00× the time of the fastest library (fully validating)&#10;way: editable&#10;twitter.json: 532 µs&#10;citm_catalog.json: 1,116 µs&#10;canada.json: 5,714 µs&#10;jeopardy.json: 192,363 µs">
<rect class="nj-heat-0" x="501" y="45" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="523.5" y="66" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · edit, checking less&#10;0.83× the time of the fastest fully validating library&#10;twitter.json: 532 µs · editable (validates fully)&#10;citm_catalog.json: 1,116 µs · editable (validates fully)&#10;canada.json: 2,702 µs · editable (source numbers) (validates fully)&#10;jeopardy.json: 192,363 µs · editable (validates fully)&#10;copies each number&#x27;s text instead of formatting it (number_format::source)">
<rect class="nj-heat-0" x="547" y="45" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="568.5" y="60" text-anchor="middle">0.83</text>
<text class="nj-charts-cell nj-charts-cell--small" x="568.5" y="73" text-anchor="middle">N</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · minify&#10;1.00× the time of the fastest library (fully validating)&#10;twitter.json: 483 µs · parse + dump&#10;citm_catalog.json: 1,014 µs · parse + dump&#10;canada.json: 5,459 µs · parse_copy + dump&#10;jeopardy.json: 146,320 µs · parse + dump">
<rect class="nj-heat-0" x="593" y="45" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="66" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · minify, checking less&#10;0.83× the time of the fastest fully validating library&#10;twitter.json: 483 µs · parse + dump (validates fully)&#10;citm_catalog.json: 1,014 µs · parse + dump (validates fully)&#10;canada.json: 2,620 µs · parse + dump (source numbers) (validates fully)&#10;jeopardy.json: 146,320 µs · parse + dump (validates fully)&#10;copies each number&#x27;s text instead of formatting it (number_format::source)">
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<text class="nj-charts-cell" x="660.5" y="60" text-anchor="middle">0.83</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="73" text-anchor="middle">N</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · write&#10;1.00× the time of the fastest library (fully validating)&#10;way: dump&#10;twitter.json: 150 µs&#10;citm_catalog.json: 260 µs&#10;canada.json: 3,861 µs&#10;jeopardy.json: 63,958 µs">
<rect class="nj-heat-0" x="685" y="45" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="707.5" y="66" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json_document · write, checking less&#10;0.71× the time of the fastest fully validating library&#10;twitter.json: 148 µs · dump (source numbers) (validates fully)&#10;citm_catalog.json: 260 µs · dump (validates fully)&#10;canada.json: 998 µs · dump (source numbers) (validates fully)&#10;jeopardy.json: 63,958 µs · dump (validates fully)&#10;copies each number&#x27;s text instead of formatting it (number_format::source)">
<rect class="nj-heat-0" x="731" y="45" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="752.5" y="60" text-anchor="middle">0.71</text>
<text class="nj-charts-cell nj-charts-cell--small" x="752.5" y="73" text-anchor="middle">N</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="102" text-anchor="end">yyjson</text>
<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · validate&#10;1.81× the time of the fastest library (fully validating)&#10;twitter.json: 348 µs · insitu (copy untimed)&#10;citm_catalog.json: 878 µs · insitu (copy untimed)&#10;canada.json: 2,256 µs · read (raw numbers)&#10;jeopardy.json: 90,959 µs · insitu (copy untimed)">
<rect class="nj-heat-2" x="225" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="102" text-anchor="middle">1.81</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · sum&#10;1.28× the time of the fastest library (fully validating)&#10;way: insitu (copy untimed)&#10;twitter.json: 407 µs&#10;citm_catalog.json: 1,045 µs&#10;canada.json: 6,021 µs&#10;jeopardy.json: 99,764 µs">
<rect class="nj-heat-1" x="317" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="102" text-anchor="middle">1.28</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · select&#10;1.22× the time of the fastest library (fully validating)&#10;twitter.json: 361 µs · insitu (copy untimed)&#10;citm_catalog.json: 880 µs · insitu (copy untimed)&#10;canada.json: 2,236 µs · read (raw numbers)&#10;jeopardy.json: 98,637 µs · insitu (copy untimed)">
<rect class="nj-heat-1" x="409" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="102" text-anchor="middle">1.22</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · edit&#10;1.49× the time of the fastest library (fully validating)&#10;way: insitu (copy untimed) + mut copy&#10;twitter.json: 761 µs&#10;citm_catalog.json: 1,590 µs&#10;canada.json: 9,860 µs&#10;jeopardy.json: 271,227 µs">
<rect class="nj-heat-1" x="501" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="102" text-anchor="middle">1.49</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · minify&#10;1.27× the time of the fastest library (fully validating)&#10;twitter.json: 592 µs · insitu (copy untimed) + write&#10;citm_catalog.json: 1,205 µs · insitu (copy untimed) + write&#10;canada.json: 9,008 µs · read + write&#10;jeopardy.json: 158,577 µs · insitu (copy untimed) + write">
<rect class="nj-heat-1" x="593" y="81" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="102" text-anchor="middle">1.27</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · minify, checking less&#10;0.97× the time of the fastest fully validating library&#10;twitter.json: 592 µs · insitu (copy untimed) + write (validates fully)&#10;citm_catalog.json: 1,205 µs · insitu (copy untimed) + write (validates fully)&#10;canada.json: 3,106 µs · read (raw numbers) + write (validates fully)&#10;jeopardy.json: 158,577 µs · insitu (copy untimed) + write (validates fully)&#10;copies each number&#x27;s text instead of formatting it (YYJSON_READ_NUMBER_AS_RAW)">
<rect class="nj-heat-0" x="639" y="81" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="96" text-anchor="middle">0.97</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="109" text-anchor="middle">N</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="yyjson · write&#10;1.14× the time of the fastest library (fully validating)&#10;way: write&#10;twitter.json: 204 µs&#10;citm_catalog.json: 327 µs&#10;canada.json: 3,748 µs&#10;jeopardy.json: 65,989 µs">
<rect class="nj-heat-0" x="685" y="81" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="102" text-anchor="middle">1.14</text>
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<text class="nj-charts-rowlabel " x="216" y="138" text-anchor="end">sonic-cpp</text>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · validate, checking less&#10;2.24× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 408 µs&#10;citm_catalog.json: 1,028 µs&#10;canada.json: 3,622 µs&#10;jeopardy.json: 96,080 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-2" x="225" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="132" text-anchor="middle">2.24</text>
<text class="nj-charts-cell nj-charts-cell--small" x="270" y="145" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · sum, checking less&#10;1.28× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 460 µs&#10;citm_catalog.json: 1,210 µs&#10;canada.json: 4,295 µs&#10;jeopardy.json: 107,092 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-1" x="317" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="132" text-anchor="middle">1.28</text>
<text class="nj-charts-cell nj-charts-cell--small" x="362" y="145" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · select, checking less&#10;1.53× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 413 µs&#10;citm_catalog.json: 1,043 µs&#10;canada.json: 3,695 µs&#10;jeopardy.json: 108,297 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-2" x="409" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="132" text-anchor="middle">1.53</text>
<text class="nj-charts-cell nj-charts-cell--small" x="454" y="145" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · edit, checking less&#10;1.26× the time of the fastest fully validating library&#10;way: Document&#10;twitter.json: 637 µs&#10;citm_catalog.json: 1,559 µs&#10;canada.json: 8,936 µs&#10;jeopardy.json: 186,232 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-1" x="501" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="132" text-anchor="middle">1.26</text>
<text class="nj-charts-cell nj-charts-cell--small" x="546" y="145" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · minify, checking less&#10;1.42× the time of the fastest fully validating library&#10;way: Document + Serialize&#10;twitter.json: 695 µs&#10;citm_catalog.json: 1,541 µs&#10;canada.json: 8,838 µs&#10;jeopardy.json: 168,901 µs&#10;trusts U&#8203;TF-8: sonic-cpp 1.0.2 doesn&#x27;t check it">
<rect class="nj-heat-1" x="593" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="132" text-anchor="middle">1.42</text>
<text class="nj-charts-cell nj-charts-cell--small" x="638" y="145" text-anchor="middle">U</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-cpp · write&#10;1.50× the time of the fastest library (fully validating)&#10;way: Serialize&#10;twitter.json: 256 µs&#10;citm_catalog.json: 541 µs&#10;canada.json: 5,120 µs&#10;jeopardy.json: 69,546 µs">
<rect class="nj-heat-2" x="685" y="117" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="138" text-anchor="middle">1.50</text>
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<text class="nj-charts-rowlabel " x="216" y="174" text-anchor="end">simdjson</text>
<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · validate&#10;2.01× the time of the fastest library (fully validating)&#10;way: D&#8203;OM&#10;twitter.json: 311 µs&#10;citm_catalog.json: 780 µs&#10;canada.json: 3,351 µs&#10;jeopardy.json: 116,704 µs">
<rect class="nj-heat-2" x="225" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="174" text-anchor="middle">2.01</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · sum&#10;1.00× the time of the fastest library (fully validating)&#10;way: On-Demand&#10;twitter.json: 356 µs&#10;citm_catalog.json: 812 µs&#10;canada.json: 3,435 µs&#10;jeopardy.json: 96,250 µs">
<rect class="nj-heat-0" x="317" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="174" text-anchor="middle">1.00</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · select&#10;1.35× the time of the fastest library (fully validating)&#10;way: D&#8203;OM&#10;twitter.json: 324 µs&#10;citm_catalog.json: 756 µs&#10;canada.json: 3,409 µs&#10;jeopardy.json: 123,214 µs">
<rect class="nj-heat-1" x="409" y="153" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="174" text-anchor="middle">1.35</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · select, checking less&#10;0.57× the time of the fastest fully validating library&#10;twitter.json: 184 µs · On-Demand (key selectors)&#10;citm_catalog.json: 509 µs · On-Demand&#10;canada.json: 700 µs · On-Demand&#10;jeopardy.json: 48,614 µs · On-Demand&#10;reads lazily: On-Demand reads only what you ask for and steps over the rest by matching brackets">
<rect class="nj-heat-0" x="455" y="153" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="168" text-anchor="middle">0.57</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="181" text-anchor="middle">P</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · edit&#10;simdjson&#x27;s documents are read-only: it has no A&#8203;PI to change a value and write the result">
<rect class="nj-heat-na" x="501" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-tick" x="546" y="174">n/a</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · minify&#10;1.58× the time of the fastest library (fully validating)&#10;way: D&#8203;OM + to_string&#10;twitter.json: 742 µs&#10;citm_catalog.json: 1,393 µs&#10;canada.json: 8,808 µs&#10;jeopardy.json: 266,718 µs">
<rect class="nj-heat-2" x="593" y="153" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="174" text-anchor="middle">1.58</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · minify, checking less&#10;0.22× the time of the fastest fully validating library&#10;way: minify&#10;twitter.json: 123 µs&#10;citm_catalog.json: 337 µs&#10;canada.json: 433 µs&#10;jeopardy.json: 47,040 µs&#10;simdjson::minify() only removes whitespace, without parsing the values">
<rect class="nj-heat-0" x="639" y="153" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="168" text-anchor="middle">0.22</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="181" text-anchor="middle">P</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simdjson · write&#10;2.07× the time of the fastest library (fully validating)&#10;way: to_string&#10;twitter.json: 359 µs&#10;citm_catalog.json: 637 µs&#10;canada.json: 4,999 µs&#10;jeopardy.json: 154,364 µs">
<rect class="nj-heat-2" x="685" y="153" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="174" text-anchor="middle">2.07</text>
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<text class="nj-charts-rowlabel " x="216" y="210" text-anchor="end">sonic-rs (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · validate&#10;1.79× the time of the fastest library (fully validating)&#10;way: IgnoredAny&#10;twitter.json: 501 µs&#10;citm_catalog.json: 970 µs&#10;canada.json: 2,249 µs&#10;jeopardy.json: 54,369 µs">
<rect class="nj-heat-2" x="225" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="210" text-anchor="middle">1.79</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · sum&#10;1.11× the time of the fastest library (fully validating)&#10;way: visitor&#10;twitter.json: 501 µs&#10;citm_catalog.json: 1,123 µs&#10;canada.json: 4,397 µs&#10;jeopardy.json: 59,583 µs">
<rect class="nj-heat-0" x="317" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="210" text-anchor="middle">1.11</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · select&#10;1.37× the time of the fastest library (fully validating)&#10;way: structs&#10;twitter.json: 504 µs&#10;citm_catalog.json: 1,033 µs&#10;canada.json: 2,328 µs&#10;jeopardy.json: 90,486 µs">
<rect class="nj-heat-1" x="409" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="210" text-anchor="middle">1.37</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · edit&#10;1.91× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 1,197 µs&#10;citm_catalog.json: 2,389 µs&#10;canada.json: 7,744 µs&#10;jeopardy.json: 390,952 µs">
<rect class="nj-heat-2" x="501" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="210" text-anchor="middle">1.91</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · minify&#10;1.73× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 1,000 µs&#10;citm_catalog.json: 2,097 µs&#10;canada.json: 7,795 µs&#10;jeopardy.json: 215,280 µs">
<rect class="nj-heat-2" x="593" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="210" text-anchor="middle">1.73</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="sonic-rs (Rust) · write&#10;2.07× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 434 µs&#10;citm_catalog.json: 927 µs&#10;canada.json: 3,987 µs&#10;jeopardy.json: 109,176 µs">
<rect class="nj-heat-2" x="685" y="189" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="210" text-anchor="middle">2.07</text>
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<text class="nj-charts-rowlabel " x="216" y="246" text-anchor="end">Boost.J&#8203;SON</text>
<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · validate&#10;1.88× the time of the fastest library (fully validating)&#10;way: S&#8203;AX (numbers: none)&#10;twitter.json: 710 µs&#10;citm_catalog.json: 969 µs&#10;canada.json: 1,718 µs&#10;jeopardy.json: 61,476 µs">
<rect class="nj-heat-2" x="225" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="246" text-anchor="middle">1.88</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · sum&#10;1.33× the time of the fastest library (fully validating)&#10;way: S&#8203;AX&#10;twitter.json: 734 µs&#10;citm_catalog.json: 1,030 µs&#10;canada.json: 6,103 µs&#10;jeopardy.json: 64,382 µs">
<rect class="nj-heat-1" x="317" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="246" text-anchor="middle">1.33</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · select&#10;2.30× the time of the fastest library (fully validating)&#10;twitter.json: 884 µs · parse_into structs&#10;citm_catalog.json: 1,380 µs · parse_into structs&#10;canada.json: 7,217 µs · parse&#10;jeopardy.json: 99,078 µs · parse_into structs">
<rect class="nj-heat-2" x="409" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="246" text-anchor="middle">2.30</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · edit&#10;2.55× the time of the fastest library (fully validating)&#10;way: parse&#10;twitter.json: 1,963 µs&#10;citm_catalog.json: 2,936 µs&#10;canada.json: 13,414 µs&#10;jeopardy.json: 356,244 µs">
<rect class="nj-heat-3" x="501" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="246" text-anchor="middle">2.55</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · minify&#10;2.92× the time of the fastest library (fully validating)&#10;way: parse + serialize&#10;twitter.json: 2,086 µs&#10;citm_catalog.json: 2,919 µs&#10;canada.json: 13,974 µs&#10;jeopardy.json: 334,468 µs">
<rect class="nj-heat-3" x="593" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="246" text-anchor="middle">2.92</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Boost.J&#8203;SON · write&#10;2.56× the time of the fastest library (fully validating)&#10;way: serialize&#10;twitter.json: 480 µs&#10;citm_catalog.json: 1,016 µs&#10;canada.json: 6,154 µs&#10;jeopardy.json: 139,022 µs">
<rect class="nj-heat-3" x="685" y="225" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="246" text-anchor="middle">2.56</text>
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<text class="nj-charts-rowlabel " x="216" y="282" text-anchor="end">simd-json (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · validate&#10;3.35× the time of the fastest library (fully validating)&#10;way: tape (copy)&#10;twitter.json: 567 µs&#10;citm_catalog.json: 1,430 µs&#10;canada.json: 4,359 µs&#10;jeopardy.json: 207,551 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="225" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="282" text-anchor="middle">3.35</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · sum&#10;1.88× the time of the fastest library (fully validating)&#10;way: visitor (copy)&#10;twitter.json: 681 µs&#10;citm_catalog.json: 1,650 µs&#10;canada.json: 5,083 µs&#10;jeopardy.json: 210,185 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-2" x="317" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="282" text-anchor="middle">1.88</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · select&#10;2.61× the time of the fastest library (fully validating)&#10;way: structs (copy)&#10;twitter.json: 679 µs&#10;citm_catalog.json: 1,731 µs&#10;canada.json: 5,144 µs&#10;jeopardy.json: 239,164 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="409" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="282" text-anchor="middle">2.61</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · edit&#10;2.89× the time of the fastest library (fully validating)&#10;twitter.json: 1,862 µs · borrowed (copy)&#10;citm_catalog.json: 4,194 µs · borrowed (copy)&#10;canada.json: 14,896 µs · owned (copy)&#10;jeopardy.json: 391,369 µs · borrowed (copy)&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="501" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="282" text-anchor="middle">2.89</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · minify&#10;3.39× the time of the fastest library (fully validating)&#10;way: borrowed (copy)&#10;twitter.json: 1,889 µs&#10;citm_catalog.json: 4,196 µs&#10;canada.json: 15,716 µs&#10;jeopardy.json: 414,377 µs&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="593" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="282" text-anchor="middle">3.39</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="simd-json (Rust) · write&#10;2.35× the time of the fastest library (fully validating)&#10;way: borrowed&#10;twitter.json: 582 µs&#10;citm_catalog.json: 800 µs&#10;canada.json: 5,147 µs&#10;jeopardy.json: 122,623 µs">
<rect class="nj-heat-2" x="685" y="261" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="282" text-anchor="middle">2.35</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="318" text-anchor="end">serde_json (Rust)</text>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · validate&#10;2.22× the time of the fastest library (fully validating)&#10;way: from_utf8 + IgnoredAny&#10;twitter.json: 624 µs&#10;citm_catalog.json: 1,440 µs&#10;canada.json: 2,406 µs&#10;jeopardy.json: 64,720 µs">
<rect class="nj-heat-2" x="225" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="247.5" y="318" text-anchor="middle">2.22</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · validate, checking less&#10;1.98× the time of the fastest fully validating library&#10;way: IgnoredAny&#10;twitter.json: 484 µs&#10;citm_catalog.json: 1,370 µs&#10;canada.json: 2,314 µs&#10;jeopardy.json: 58,247 µs&#10;trusts U&#8203;TF-8 in the strings it skips (from_slice); strings it reads are checked">
<rect class="nj-heat-2" x="271" y="297" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="292.5" y="312" text-anchor="middle">1.98</text>
<text class="nj-charts-cell nj-charts-cell--small" x="292.5" y="325" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · sum&#10;2.32× the time of the fastest library (fully validating)&#10;way: visitor&#10;twitter.json: 1,311 µs&#10;citm_catalog.json: 2,288 µs&#10;canada.json: 7,127 µs&#10;jeopardy.json: 129,497 µs">
<rect class="nj-heat-2" x="317" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="318" text-anchor="middle">2.32</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · select&#10;1.75× the time of the fastest library (fully validating)&#10;way: from_utf8 + structs&#10;twitter.json: 701 µs&#10;citm_catalog.json: 1,532 µs&#10;canada.json: 2,529 µs&#10;jeopardy.json: 107,316 µs">
<rect class="nj-heat-2" x="409" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="318" text-anchor="middle">1.75</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · edit&#10;4.55× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 4,042 µs&#10;citm_catalog.json: 6,586 µs&#10;canada.json: 16,631 µs&#10;jeopardy.json: 632,766 µs">
<rect class="nj-heat-3" x="501" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="318" text-anchor="middle">4.55</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · minify&#10;4.94× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 4,012 µs&#10;citm_catalog.json: 6,583 µs&#10;canada.json: 17,306 µs&#10;jeopardy.json: 509,702 µs">
<rect class="nj-heat-3" x="593" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="318" text-anchor="middle">4.94</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="serde_json (Rust) · write&#10;2.28× the time of the fastest library (fully validating)&#10;way: Value&#10;twitter.json: 550 µs&#10;citm_catalog.json: 887 µs&#10;canada.json: 4,005 µs&#10;jeopardy.json: 134,163 µs">
<rect class="nj-heat-2" x="685" y="297" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="318" text-anchor="middle">2.28</text>
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<text class="nj-charts-rowlabel " x="216" y="354" text-anchor="end">Glaze</text>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · validate&#10;2.21× the time of the fastest library (fully validating)&#10;way: validate_json&#10;twitter.json: 590 µs&#10;citm_catalog.json: 1,545 µs&#10;canada.json: 1,980 µs&#10;jeopardy.json: 76,009 µs">
<rect class="nj-heat-2" x="225" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="354" text-anchor="middle">2.21</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · sum&#10;4.04× the time of the fastest library (fully validating)&#10;way: generic (double, strict)&#10;twitter.json: 2,345 µs&#10;citm_catalog.json: 4,080 µs&#10;canada.json: 10,576 µs&#10;jeopardy.json: 250,685 µs">
<rect class="nj-heat-3" x="317" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="354" text-anchor="middle">4.04</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · select&#10;1.44× the time of the fastest library (fully validating)&#10;way: structs (validate_skipped)&#10;twitter.json: 529 µs&#10;citm_catalog.json: 1,435 µs&#10;canada.json: 1,913 µs&#10;jeopardy.json: 91,253 µs">
<rect class="nj-heat-1" x="409" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="354" text-anchor="middle">1.44</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · select, checking less&#10;0.60× the time of the fastest fully validating library&#10;way: structs&#10;twitter.json: 342 µs&#10;citm_catalog.json: 410 µs&#10;canada.json: 431 µs&#10;jeopardy.json: 66,069 µs&#10;reads into structs and steps over fields it doesn&#x27;t know without checking them (validate_skipped checks them too)">
<rect class="nj-heat-0" x="455" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="348" text-anchor="middle">0.60</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="361" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · edit&#10;4.85× the time of the fastest library (fully validating)&#10;way: generic (strict)&#10;twitter.json: 3,525 µs&#10;citm_catalog.json: 6,551 µs&#10;canada.json: 23,644 µs&#10;jeopardy.json: 661,941 µs">
<rect class="nj-heat-3" x="501" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="354" text-anchor="middle">4.85</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · minify&#10;5.10× the time of the fastest library (fully validating)&#10;way: generic (strict)&#10;twitter.json: 3,780 µs&#10;citm_catalog.json: 6,416 µs&#10;canada.json: 23,765 µs&#10;jeopardy.json: 458,311 µs">
<rect class="nj-heat-4" x="593" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="354" text-anchor="middle">5.10</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · minify, checking less&#10;0.73× the time of the fastest fully validating library&#10;way: minify_json&#10;twitter.json: 422 µs&#10;citm_catalog.json: 1,144 µs&#10;canada.json: 2,350 µs&#10;jeopardy.json: 96,405 µs&#10;minify_json only removes whitespace, without parsing the values">
<rect class="nj-heat-0" x="639" y="333" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="348" text-anchor="middle">0.73</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="361" text-anchor="middle">P</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="Glaze · write&#10;1.84× the time of the fastest library (fully validating)&#10;twitter.json: 360 µs · generic&#10;citm_catalog.json: 660 µs · generic&#10;canada.json: 3,714 µs · generic (strict)&#10;jeopardy.json: 124,598 µs · generic">
<rect class="nj-heat-2" x="685" y="333" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="354" text-anchor="middle">1.84</text>
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<text class="nj-charts-rowlabel nj-charts-name-json" x="216" y="390" text-anchor="end">nlohmann/json json</text>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · validate&#10;2.74× the time of the fastest library (fully validating)&#10;way: accept&#10;twitter.json: 677 µs&#10;citm_catalog.json: 1,433 µs&#10;canada.json: 4,584 µs&#10;jeopardy.json: 73,561 µs">
<rect class="nj-heat-3" x="225" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="270" y="390" text-anchor="middle">2.74</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · sum&#10;1.67× the time of the fastest library (fully validating)&#10;way: sax&#10;twitter.json: 797 µs&#10;citm_catalog.json: 1,548 µs&#10;canada.json: 6,004 µs&#10;jeopardy.json: 101,516 µs">
<rect class="nj-heat-2" x="317" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="362" y="390" text-anchor="middle">1.67</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · select&#10;7.24× the time of the fastest library (fully validating)&#10;way: structs (from_json)&#10;twitter.json: 3,325 µs&#10;citm_catalog.json: 5,126 µs&#10;canada.json: 11,908 µs&#10;jeopardy.json: 423,362 µs">
<rect class="nj-heat-4" x="409" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="454" y="390" text-anchor="middle">7.24</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · edit&#10;3.81× the time of the fastest library (fully validating)&#10;way: ordered_json&#10;twitter.json: 2,912 µs&#10;citm_catalog.json: 4,999 µs&#10;canada.json: 15,603 µs&#10;jeopardy.json: 604,744 µs">
<rect class="nj-heat-3" x="501" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="546" y="390" text-anchor="middle">3.81</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · minify&#10;4.79× the time of the fastest library (fully validating)&#10;way: parse + dump&#10;twitter.json: 4,143 µs&#10;citm_catalog.json: 5,702 µs&#10;canada.json: 16,463 µs&#10;jeopardy.json: 528,092 µs">
<rect class="nj-heat-3" x="593" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="638" y="390" text-anchor="middle">4.79</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="nlohmann/json json · write&#10;1.99× the time of the fastest library (fully validating)&#10;way: dump&#10;twitter.json: 471 µs&#10;citm_catalog.json: 644 µs&#10;canada.json: 4,344 µs&#10;jeopardy.json: 114,096 µs">
<rect class="nj-heat-2" x="685" y="369" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="390" text-anchor="middle">1.99</text>
</g>
<text class="nj-charts-rowlabel " x="216" y="426" text-anchor="end">RapidJSON</text>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · validate&#10;4.50× the time of the fastest library (fully validating)&#10;twitter.json: 1,552 µs · insitu (copy untimed)&#10;citm_catalog.json: 2,210 µs · insitu (copy untimed)&#10;canada.json: 4,104 µs · S&#8203;AX (string stream, default precision)&#10;jeopardy.json: 168,747 µs · insitu (copy untimed)">
<rect class="nj-heat-3" x="225" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="247.5" y="426" text-anchor="middle">4.50</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · validate, checking less&#10;3.40× the time of the fastest fully validating library&#10;twitter.json: 1,082 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,570 µs · S&#8203;AX (default precision) (no encoding check)&#10;canada.json: 4,104 µs · S&#8203;AX (string stream, default precision) (validates fully)&#10;jeopardy.json: 110,856 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="271" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="292.5" y="420" text-anchor="middle">3.40</text>
<text class="nj-charts-cell nj-charts-cell--small" x="292.5" y="433" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · sum&#10;2.98× the time of the fastest library (fully validating)&#10;twitter.json: 1,616 µs · insitu (copy untimed)&#10;citm_catalog.json: 2,290 µs · insitu (copy untimed)&#10;canada.json: 11,183 µs · S&#8203;AX (string stream)&#10;jeopardy.json: 181,500 µs · insitu (copy untimed)">
<rect class="nj-heat-3" x="317" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="339.5" y="426" text-anchor="middle">2.98</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · sum, checking less&#10;2.29× the time of the fastest fully validating library&#10;twitter.json: 1,130 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,743 µs · S&#8203;AX (no encoding check)&#10;canada.json: 11,109 µs · S&#8203;AX (string stream) (no encoding check)&#10;jeopardy.json: 119,706 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-2" x="363" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="384.5" y="420" text-anchor="middle">2.29</text>
<text class="nj-charts-cell nj-charts-cell--small" x="384.5" y="433" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · select&#10;3.84× the time of the fastest library (fully validating)&#10;way: insitu (copy untimed)&#10;twitter.json: 1,560 µs&#10;citm_catalog.json: 2,127 µs&#10;canada.json: 11,547 µs&#10;jeopardy.json: 176,066 µs">
<rect class="nj-heat-3" x="409" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="431.5" y="426" text-anchor="middle">3.84</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · select, checking less&#10;3.06× the time of the fastest fully validating library&#10;twitter.json: 1,079 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 1,817 µs · insitu (copy untimed) (no encoding check)&#10;canada.json: 11,436 µs · Document (string stream) (no encoding check)&#10;jeopardy.json: 122,354 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="455" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="476.5" y="420" text-anchor="middle">3.06</text>
<text class="nj-charts-cell nj-charts-cell--small" x="476.5" y="433" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · edit&#10;2.92× the time of the fastest library (fully validating)&#10;twitter.json: 2,333 µs · insitu (copy untimed)&#10;citm_catalog.json: 3,133 µs · insitu (copy untimed)&#10;canada.json: 20,518 µs · insitu (copy)&#10;jeopardy.json: 315,892 µs · insitu (copy untimed)&#10;(copy): parses in place, on a copy of the input that is part of the time">
<rect class="nj-heat-3" x="501" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="523.5" y="426" text-anchor="middle">2.92</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · edit, checking less&#10;2.58× the time of the fastest fully validating library&#10;twitter.json: 1,838 µs · insitu (copy untimed) (no encoding check)&#10;citm_catalog.json: 2,836 µs · insitu (copy untimed) (no encoding check)&#10;canada.json: 20,320 µs · Document (string stream) (no encoding check)&#10;jeopardy.json: 271,888 µs · insitu (copy untimed) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)">
<rect class="nj-heat-3" x="547" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="568.5" y="420" text-anchor="middle">2.58</text>
<text class="nj-charts-cell nj-charts-cell--small" x="568.5" y="433" text-anchor="middle">U</text>
</g>
<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · minify&#10;3.64× the time of the fastest library (fully validating)&#10;twitter.json: 3,015 µs · S&#8203;AX to Writer&#10;citm_catalog.json: 3,012 µs · S&#8203;AX to Writer&#10;canada.json: 21,177 µs · Document + Writer&#10;jeopardy.json: 355,727 µs · S&#8203;AX to Writer (string stream)">
<rect class="nj-heat-3" x="593" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="615.5" y="426" text-anchor="middle">3.64</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · minify, checking less&#10;2.64× the time of the fastest fully validating library&#10;twitter.json: 1,978 µs · S&#8203;AX to Writer (no encoding check)&#10;citm_catalog.json: 2,493 µs · S&#8203;AX to Writer (no encoding check)&#10;canada.json: 15,512 µs · S&#8203;AX to Writer (raw numbers) (no encoding check)&#10;jeopardy.json: 249,235 µs · S&#8203;AX to Writer (string stream) (no encoding check)&#10;trusts U&#8203;TF-8: RapidJSON&#x27;s default (kParseValidateEncodingFlag checks it)&#10;copies each number&#x27;s text instead of formatting it (kParseNumbersAsStringsFlag)">
<rect class="nj-heat-3" x="639" y="405" width="44" height="34" rx="3"/>
<text class="nj-charts-cell" x="660.5" y="420" text-anchor="middle">2.64</text>
<text class="nj-charts-cell nj-charts-cell--small" x="660.5" y="433" text-anchor="middle">U N</text>
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<g class="nj-heat-cell" tabindex="0" data-tip="RapidJSON · write&#10;3.11× the time of the fastest library (fully validating)&#10;way: Writer&#10;twitter.json: 717 µs&#10;citm_catalog.json: 1,033 µs&#10;canada.json: 9,017 µs&#10;jeopardy.json: 134,260 µs">
<rect class="nj-heat-3" x="685" y="405" width="90" height="34" rx="3"/>
<text class="nj-charts-cell" x="730" y="426" text-anchor="middle">3.11</text>
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<text class="nj-charts-tick nj-charts-tick--l" x="8" y="472">time relative to the fastest fully validating library, less is better</text>
<g><rect class="nj-heat-0" x="8" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="46" y="496" text-anchor="middle">below 1.15</text></g>
<g><rect class="nj-heat-1" x="88" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="126" y="496" text-anchor="middle">1.15 to 1.5</text></g>
<g><rect class="nj-heat-2" x="168" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="206" y="496" text-anchor="middle">1.5 to 2.5</text></g>
<g><rect class="nj-heat-3" x="248" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="286" y="496" text-anchor="middle">2.5 to 5</text></g>
<g><rect class="nj-heat-4" x="328" y="482" width="76" height="20" rx="3"/>
<text class="nj-charts-cell nj-charts-cell--small" x="366" y="496" text-anchor="middle">5 and more</text></g>
<rect class="nj-heat-na" x="420" y="482" width="40" height="20" rx="3"/>
<text class="nj-charts-tick" x="440" y="496">n/a</text>
<text class="nj-charts-tick nj-charts-tick--l" x="468" y="496">no A&#8203;PI for it</text>
</svg>
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