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id="mw-head-base" class="noprint"></div> <div id="content" class="mw-body" role="main"> <a id="top"></a> <div id="siteNotice"></div> <div class="mw-indicators"> <div id="mw-indicator-mw-helplink" class="mw-indicator"><a href="/wiki/Commons:Categories" target="_blank" class="mw-helplink"><span class="mw-helplink-icon"></span>Help</a></div> </div> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-namespace">Category</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">W3C validation</span></h1> <div id="bodyContent" class="vector-body"> <div id="siteSub" class="noprint">From Wikimedia Commons, the free media repository</div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="contentSub2"></div> <div id="jump-to-nav"></div> <a class="mw-jump-link" href="#mw-head">Jump to navigation</a> <a class="mw-jump-link" href="#searchInput">Jump to search</a> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r905765184">.mw-parser-output #wdinfobox[dir="ltr"]{float:right;clear:right;margin-right:0;margin-left:1em}.mw-parser-output #wdinfobox[dir="rtl"]{float:left;clear:left;margin-left:0;margin-right:1em}.mw-parser-output #wdinfobox{width:258px;box-sizing:border-box;font-size:95%;padding:0}.mw-parser-output #wdinfobox .image img{max-width:250px;max-height:250px;width:auto}.mw-parser-output #wdinfoboxcaption{background:#FFF}.mw-parser-output #wdinfobox[dir="ltr"] #wdinfoboxcaption{margin-left:0}.mw-parser-output #wdinfobox[dir="rtl"] #wdinfoboxcaption{margin-right:0}.mw-parser-output #wdinfobox th,.mw-parser-output #wdinfo_taxon th{vertical-align:top;word-wrap:break-word;hyphens:auto}.mw-parser-output #wdinfobox td,.mw-parser-output #wdinfo_taxon td{word-wrap:break-word;hyphens:auto}.mw-parser-output #wdinfobox li:not(:last-child){margin-bottom:3px}.mw-parser-output #wdinfo_taxon{font-size:95%;table-layout:fixed;padding:0}.mw-parser-output .taxontree-lcell,.mw-parser-output .wikidatainfobox-lcell{background:#CFE3FF;padding-left:.4em;padding-right:.4em;font-weight:bold}.mw-parser-output .taxontree-rcell,.mw-parser-output .wikidatainfobox-rcell{word-wrap:break-word;hyphens:auto}.mw-parser-output #wdinfobox[dir="ltr"] .taxontree-lcell,.mw-parser-output #wdinfobox[dir="ltr"] .wikidatainfobox-lcell{text-align:right;word-wrap:break-word;hyphens:auto}.mw-parser-output #wdinfobox[dir="rtl"] .taxontree-lcell,.mw-parser-output #wdinfobox[dir="rtl"] .wikidatainfobox-lcell{text-align:left;word-wrap:break-word;hyphens:auto}.mw-parser-output .taxontree-fullcell{text-align:center}.mw-parser-output .taxontree-hdrcell{text-align:center;background:#CFE3FF;padding-left:.4em;padding-right:.4em;font-weight:bold}.mw-parser-output .taxontree-row{}@media screen and (max-width:600px){.mw-parser-output .wdinfo_nomobile{display:none;visibility:hidden;height:0}}.mw-parser-output .wdinfobox_horizontal{clear:both!important;display:block;box-sizing:border-box!important;width:100%!important;column-width:24em}.mw-parser-output .wdinfobox_hide{display:none}.mw-parser-output #wdcreator{display:none}.mw-parser-output .wdcreator_show{display:block!important}.mw-parser-output #wdinfo_taxon ul{list-style:none;list-style-position:inside}.mw-parser-output #wdinfobox[dir="ltr"] #wdinfo_taxon ul{padding-left:0;margin-left:0}.mw-parser-output #wdinfobox[dir="rtl"] #wdinfo_taxon ul{padding-right:0;margin-right:0}.mw-parser-output .wikidatainfoboxVN ul li{list-style:none;padding:0;margin:0}.mw-parser-output .wikidatainfoboxVN ul{margin-left:0}.mw-parser-output .wikidatainfoboxVN{padding:0;margin:0}</style><div style="display:none"><nowiki>W3C Markup Validation Service; W3C Markup Validation Service; W3C Markup Validation Service; W3C Markup Validation Service; W3C驗証服務; Markup Validation Service; W3C Markup Validation Service; W3C Markup Validation Service; W3C Markup Validation Service; W3C Markup Validation Service; W3C驗証服務; W3C Markup Validation Service; W3C驗証服務; W3C Markup Validation Service; W3C Markup Validation Service; W3C Markup Validation Service; W3C验证服务; W3C Markup Validation Service; validator service by the World Wide Web Consortium; ソフトヱヤ; W3C验证服务; W3C validator</nowiki></div><table id="wdinfobox" class="fileinfotpl-type-information vevent infobox mw-collapsible mw-content-ltr"><caption class="fn org" id="wdinfoboxcaption"><b>W3C Markup Validation Service </b></caption><tbody><tr><td colspan="2" class="wdinfo_nomobile" style="text-align:center"><div>validator service by the World Wide Web Consortium</div><div class="switcher-container"></div></td></tr><tr><td colspan="2" style="text-align:center"><b><a class="external text" href="https://commons.wikimedia.org/w/index.php?title=Special%3AUploadWizard&categories=W3C+validation">Upload media</a></b></td></tr><tr><td colspan="2" style="text-align:center; font-weight:bold"><div><span typeof="mw:File"><span><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Wikipedia-logo-v2.svg/16px-Wikipedia-logo-v2.svg.png" decoding="async" width="16" height="15" class="mw-file-element" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Wikipedia-logo-v2.svg/24px-Wikipedia-logo-v2.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/8/80/Wikipedia-logo-v2.svg/32px-Wikipedia-logo-v2.svg.png 2x" data-file-width="103" data-file-height="94" /></span></span> <a href="https://en.wikipedia.org/wiki/W3C_Markup_Validation_Service" class="extiw" title="en:W3C Markup Validation Service">Wikipedia</a></div></td></tr><tr><th class="wikidatainfobox-lcell">Instance of</th><td><div class="plainlist"><ul><li><a href="/wiki/Software" title="Software">software</a></li></ul></div></td></tr><tr><td colspan="2" style="text-align:center"><a rel="nofollow" class="external text" href="https://validator.w3.org/">official website</a></td></tr><tr><td colspan="2"><table style="width:100%" id="wdinfo_ac" class="mw-collapsible"><tbody><tr><th style="background: #cfe3ff">Authority file</th></tr><tr><td style="text-align: center;"><div style="overflow-wrap: break-word; font-size: smaller"><span typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q2120923" title="d:Q2120923"><img alt="Wikidata" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/20px-Wikidata-logo.svg.png" decoding="async" width="20" height="11" class="mw-file-element" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/30px-Wikidata-logo.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/ff/Wikidata-logo.svg/40px-Wikidata-logo.svg.png 2x" data-file-width="1050" data-file-height="590" /></a></span> <a href="https://www.wikidata.org/wiki/Q2120923" class="extiw" title="d:Q2120923">Q2120923</a><br /><span class="wdinfo_nomobile"></span></div></td></tr><tr class="wdinfo_nomobile"><td colspan="2" style="text-align: center"><small><div class="hlist hlist-separated"><ul><li><span style="white-space:nowrap"><a class="external text" href="https://reasonator.toolforge.org/?q=Q2120923">Reasonator</a></span></li><li><span style="white-space:nowrap"><a href="https://iw.toolforge.org/scholia/Q2120923" class="extiw" title="toolforge:scholia/Q2120923">Scholia</a></span></li><li><span style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://wikidocumentaries-demo.wmcloud.org/Q2120923">Wikidocumentaries</a></span></li><li><span style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://petscan.wmflabs.org/?language=commons&categories=W3C_validation&project=wikimedia&ns%5B6%5D=1">PetScan</a></span></li><li><span style="white-space:nowrap"><a class="external text" href="https://glamtools.toolforge.org/glamorgan.html?&category=W3C_validation&depth=1&month=last">statistics</a></span></li><li><span style="white-space:nowrap"><a class="external text" href="https://wikimap.toolforge.org/?cat=W3C_validation&subcats=true&subcatdepth=1&cluster=true">WikiMap</a></span></li><li><span style="white-space:nowrap"><a class="external text" href="https://locator-tool.toolforge.org/#/geolocate?category=W3C_validation">Locator tool</a></span></li><li><span style="white-space:nowrap"><a class="external text" href="https://kmlexport.toolforge.org/?project=commons&article=Category%3AW3C+validation">KML file</a></span></li><li><a href="/wiki/Special:Search/haswbstatement:P180%3DQ2120923" title="Special:Search/haswbstatement:P180=Q2120923">Search depicted</a></li></ul></div></small></td></tr></tbody></table></td></tr><tr class="wdinfo_nomobile"><td lang="en" colspan="2" style="text-align:right"><span typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q2120923" title="Edit infobox data on Wikidata"><img alt="Edit infobox data on Wikidata" src="https://upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/15px-Blue_pencil.svg.png" decoding="async" width="15" height="15" class="mw-file-element" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/23px-Blue_pencil.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/7/73/Blue_pencil.svg/30px-Blue_pencil.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></td></tr></tbody></table> <p>This category contains symbols of W3C validation. </p>    </div><div class="mw-category-generated" lang="en" dir="ltr"><div id="mw-category-media"> <h2>Media in category "W3C validation"</h2> <p>The following 54 files are in this category, out of 54 total. </p><ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Valid_SVG_1.0_(green).svg" class="mw-file-description"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/6/62/Valid_SVG_1.0_%28green%29.svg/120px-Valid_SVG_1.0_%28green%29.svg.png" decoding="async" loading="lazy" width="120" height="41" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/6/62/Valid_SVG_1.0_%28green%29.svg/180px-Valid_SVG_1.0_%28green%29.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/6/62/Valid_SVG_1.0_%28green%29.svg/240px-Valid_SVG_1.0_%28green%29.svg.png 2x" data-file-width="512" data-file-height="174" /></a></span></div> <div class="gallerytext"><a href="/wiki/File:Valid_SVG_1.0_(green).svg" class="galleryfilename galleryfilename-truncate" title="File:Valid SVG 1.0 (green).svg">Valid SVG 1.0 (green).svg</a> 512 × 174; 2 KB<br> </div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Valid_SVG_1.1_(green).svg" class="mw-file-description"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Valid_SVG_1.1_%28green%29.svg/120px-Valid_SVG_1.1_%28green%29.svg.png" decoding="async" loading="lazy" width="120" height="41" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Valid_SVG_1.1_%28green%29.svg/180px-Valid_SVG_1.1_%28green%29.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/1/1a/Valid_SVG_1.1_%28green%29.svg/240px-Valid_SVG_1.1_%28green%29.svg.png 2x" data-file-width="91" data-file-height="31" /></a></span></div> <div class="gallerytext"><a href="/wiki/File:Valid_SVG_1.1_(green).svg" class="galleryfilename galleryfilename-truncate" title="File:Valid SVG 1.1 (green).svg">Valid SVG 1.1 (green).svg</a> 91 × 31; 2 KB<br> </div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Valid_SVG_1.x_(green).svg" class="mw-file-description"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Valid_SVG_1.x_%28green%29.svg/120px-Valid_SVG_1.x_%28green%29.svg.png" decoding="async" loading="lazy" width="120" height="41" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Valid_SVG_1.x_%28green%29.svg/180px-Valid_SVG_1.x_%28green%29.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Valid_SVG_1.x_%28green%29.svg/240px-Valid_SVG_1.x_%28green%29.svg.png 2x" data-file-width="512" data-file-height="174" /></a></span></div> <div class="gallerytext"><a href="/wiki/File:Valid_SVG_1.x_(green).svg" class="galleryfilename galleryfilename-truncate" title="File:Valid SVG 1.x (green).svg">Valid SVG 1.x (green).svg</a> 512 × 174; 2 KB<br> </div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Invalid_SVG_1.1_(red).svg" class="mw-file-description"><img alt="" src="https://upload.wikimedia.org/wikipedia/commons/thumb/6/65/Invalid_SVG_1.1_%28red%29.svg/120px-Invalid_SVG_1.1_%28red%29.svg.png" decoding="async" loading="lazy" width="120" height="41" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/6/65/Invalid_SVG_1.1_%28red%29.svg/180px-Invalid_SVG_1.1_%28red%29.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/6/65/Invalid_SVG_1.1_%28red%29.svg/240px-Invalid_SVG_1.1_%28red%29.svg.png 2x" data-file-width="91" data-file-height="31" /></a></span></div> <div class="gallerytext"><a href="/wiki/File:Invalid_SVG_1.1_(red).svg" class="galleryfilename galleryfilename-truncate" title="File:Invalid SVG 1.1 (red).svg">Invalid SVG 1.1 (red).svg</a> 91 × 31; 2 KB<br> </div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a 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<div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="wb-otherproject-link wb-otherproject-wikipedia mw-list-item"><a href="https://en.wikipedia.org/wiki/W3C_Markup_Validation_Service" hreflang="en"><span>Wikipedia</span></a></li><li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2120923" title="Link to connected data repository item [g]" accesskey="g"><span>Wikidata item</span></a></li> </ul> </div> </nav> <nav id="p-lang" class="mw-portlet mw-portlet-lang vector-menu-portal portal vector-menu" aria-labelledby="p-lang-label" > <h3 id="p-lang-label" class="vector-menu-heading " > <span class="vector-menu-heading-label">In Wikipedia</span> </h3> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – Catalan" lang="ca" hreflang="ca" data-title="W3C Markup Validation Service" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Markup_Validation_Service" title="Markup Validation Service – Danish" lang="da" hreflang="da" data-title="Markup Validation Service" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – German" lang="de" hreflang="de" data-title="W3C Markup Validation Service" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – English" lang="en" hreflang="en" data-title="W3C Markup Validation Service" data-language-autonym="English" data-language-local-name="English" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – Spanish" lang="es" hreflang="es" data-title="W3C Markup Validation Service" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – Indonesian" lang="id" hreflang="id" data-title="W3C Markup Validation Service" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/W3C_Validator" title="W3C Validator – Italian" lang="it" hreflang="it" data-title="W3C Validator" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – Japanese" lang="ja" hreflang="ja" data-title="W3C Markup Validation Service" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – Korean" lang="ko" hreflang="ko" data-title="W3C Markup Validation Service" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – Polish" lang="pl" hreflang="pl" data-title="W3C Markup Validation Service" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – Serbian" lang="sr" hreflang="sr" data-title="W3C Markup Validation Service" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/W3C_Markup_Validation_Service" title="W3C Markup Validation Service – Swedish" lang="sv" hreflang="sv" data-title="W3C Markup Validation Service" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/W3C%E9%A9%97%E8%A8%BC%E6%9C%8D%E5%8B%99" title="W3C驗証服務 – Chinese" lang="zh" hreflang="zh" data-title="W3C驗証服務" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2120923#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </nav> </div> </div> <footer id="footer" class="mw-footer" > <ul 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