Validator.w3.org is a subdomain of w3.org,
which was created on 1994-07-06,making it 30 years ago.
It has several subdomains, such as lists.w3.org
irc.w3.org , among others.
Description:W3C's easy-to-use markup validation service, based on SGML and XML...
Keywords:HTML, HyperText Markup Language, Validation, W3C Markup Validation...
Discover validator.w3.org website stats, rating, details and status online.Use our online tools to find owner and admin contact info. Find out where is server located.Read and write reviews or vote to improve it ranking. Check alliedvsaxis duplicates with related css, domain relations, most used words, social networks references. Go to regular site
HomePage size: 33.753 KB |
Page Load Time: 0.870225 Seconds |
Website IP Address: 104.18.23.19 |
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The W3C Markup Validation Service https://validator.w3.org/ |
Source code and package availability for the W3C Markup ... https://validator.w3.org/source/ |
Documentation for the W3C Markup Validator https://validator.w3.org/docs/ |
What's New at The W3C Markup Validation Service https://validator.w3.org/whatsnew.html |
The W3C Markup Validation Service: Tests https://validator.w3.org/dev/tests/ |
Development Roadmap for The W3C Markup Validation ... https://validator.w3.org/todo.html |
About the W3C Markup Validation Service https://validator.w3.org/about.html |
Feedback - W3C Markup Validation https://validator.w3.org/feedback.html |
Favelets For The Validator https://validator.w3.org/favelets.html |
How to Contribute to the W3C Markup Validator https://validator.w3.org/contribute.html |
Date: Tue, 14 May 2024 13:39:13 GMT |
Content-Type: text/html; charset=utf-8 |
Transfer-Encoding: chunked |
Connection: keep-alive |
vary: Accept-Encoding |
strict-transport-security: max-age=15552015; preload |
public-key-pins: pin-sha256="cN0QSpPIkuwpT6iP2YjEo1bEwGpH/yiUn6yhdy+HNto="; pin-sha256="WGJkyYjx1QMdMe0UqlyOKXtydPDVrk7sl2fV+nNm1r4="; pin-sha256="LrKdTxZLRTvyHM4/atX2nquX9BeHRZMCxg3cf4rhc2I="; max-age=864000 |
x-frame-options: deny |
x-xss-protection: 1; mode=block |
x-request-id: 883b4b0638d1234f |
CF-Cache-Status: DYNAMIC |
Server: cloudflare |
CF-RAY: 883b4b0638d1234f-SJC |
alt-svc: h3=":443"; ma=86400 |
content="text/html;charset=utf-8" http-equiv="Content-Type"/ |
Markup Validation Service Check the markup (HTML, XHTML, …) of Web documents Validate by URI Validate by File Upload Validate by Direct Input Validate by URI Validate a document online: Address: More Options Character Encoding (detect automatically) utf-8 (Unicode, worldwide) utf-16 (Unicode, worldwide) iso-8859-1 (Western Europe) iso-8859-2 (Central Europe) iso-8859-3 (Southern Europe) iso-8859-4 (North European) iso-8859-5 (Cyrillic) iso-8859-6-i (Arabic) iso-8859-7 (Greek) iso-8859-8 (Hebrew, visual) iso-8859-8-i (Hebrew, logical) iso-8859-9 (Turkish) iso-8859-10 (Latin 6) iso-8859-11 (Latin/Thai) iso-8859-13 (Latin 7, Baltic Rim) iso-8859-14 (Latin 8, Celtic) iso-8859-15 (Latin 9) iso-8859-16 (Latin 10) us-ascii (basic English) euc-jp (Japanese, Unix) shift_jis (Japanese, Win/Mac) iso-2022-jp (Japanese, email) euc-kr (Korean) ksc_5601 (Korean) gb2312 (Chinese, simplified) gb18030 (Chinese, simplified) big5 (Chinese, traditional) Big5-HKSCS (Chinese, Hong Kong) tis-620 (Thai) koi8-r (Russian) koi8-u (Ukrainian) iso-ir-111 (Cyrillic KOI-8) macintosh (MacRoman) windows-1250 (Central Europe) windows-1251 (Cyrillic) windows-1252 (Western Europe) windows-1253 (Greek) windows-1254 (Turkish) windows-1255 (Hebrew) windows-1256 (Arabic) windows-1257 (Baltic Rim) Only if missing Document Type (detect automatically) HTML5 (experimental) XHTML 1.0 Strict XHTML 1.0 Transitional XHTML 1.0 Frameset HTML 4.01 Strict HTML 4.01 Transitional HTML 4.01 Frameset HTML 4.01 + RDFa 1.1 HTML 3.2 HTML 2.0 ISO/IEC 15445:2000 ("ISO HTML") XHTML 1.1 XHTML + RDFa XHTML Basic 1.0 XHTML Basic 1.1 XHTML Mobile Profile 1.2 XHTML-Print 1.0 XHTML 1.1 plus MathML 2.0 XHTML 1.1 plus MathML 2.0 plus SVG 1.1 MathML 2.0 SVG 1.0 SVG 1.1 SVG 1.1 Tiny SVG 1.1 Basic SMIL 1.0 SMIL 2.0 Only if missing List Messages Sequentially Group Error Messages by Type Show Source Clean up Markup with HTML-Tidy Show Outline Validate error pages Verbose Output Validate by File Upload Upload a document for validation: File: More Options Character Encoding (detect automatically) utf-8 (Unicode, worldwide) utf-16 (Unicode, worldwide) iso-8859-1 (Western Europe) iso-8859-2 (Central Europe) iso-8859-3 (Southern Europe) iso-8859-4 (North European) iso-8859-5 (Cyrillic) iso-8859-6-i (Arabic) iso-8859-7 (Greek) iso-8859-8 (Hebrew, visual) iso-8859-8-i (Hebrew, logical) iso-8859-9 (Turkish) iso-8859-10 (Latin 6) iso-8859-11 (Latin/Thai) iso-8859-13 (Latin 7, Baltic Rim) iso-8859-14 (Latin 8, Celtic) iso-8859-15 (Latin 9) iso-8859-16 (Latin 10) us-ascii (basic English) euc-jp (Japanese, Unix) shift_jis (Japanese, Win/Mac) iso-2022-jp (Japanese, email) euc-kr (Korean) ksc_5601 (Korean) gb2312 (Chinese, simplified) gb18030 (Chinese, simplified) big5 (Chinese, traditional) Big5-HKSCS (Chinese, Hong Kong) tis-620 (Thai) koi8-r (Russian) koi8-u (Ukrainian) iso-ir-111 (Cyrillic KOI-8) macintosh (MacRoman) windows-1250 (Central Europe) windows-1251 (Cyrillic) windows-1252 (Western Europe) windows-1253 (Greek) windows-1254 (Turkish) windows-1255 (Hebrew) windows-1256 (Arabic) windows-1257 (Baltic Rim) Only if missing Document Type (detect automatically) HTML5 (experimental) XHTML 1.0 Strict XHTML 1.0 Transitional XHTML 1.0 Frameset HTML 4.01 Strict HTML 4.01 Transitional HTML 4.01 Frameset HTML 4.01 + RDFa 1.1 HTML 3.2 HTML 2.0 ISO/IEC 15445:2000 ("ISO HTML") XHTML 1.1 XHTML + RDFa XHTML Basic 1.0 XHTML Basic 1.1 XHTML Mobile Profile 1.2 XHTML-Print 1.0 XHTML 1.1 plus MathML 2.0 XHTML 1.1 plus MathML 2.0 plus SVG 1.1 MathML 2.0 SVG 1.0 SVG 1.1 SVG 1.1 Tiny SVG 1.1 Basic SMIL 1.0 SMIL 2.0 Only if missing List Messages Sequentially Group Error Messages by Type Show Source Clean up Markup with HTML-Tidy Show Outline Validate error pages Verbose Output Note : file upload may not work with Internet Explorer on some versions of Windows XP Service Pack 2, see our information page on the W3C QA Website. Validate by direct input Enter the Markup to validate : Treat as: HTML XML (and XHTML)More Options Validate Full Document Use Doctype: (detect automatically) HTML5 (experimental) XHTML 1.0 Strict XHTML 1.0 Transitional XHTML 1.0 Frameset HTML 4.01 Strict HTML 4.01 Transitional HTML 4.01 Frameset HTML 4.01 + RDFa 1.1 HTML 3.2 HTML 2.0 ISO/IEC 15445:2000 ("ISO HTML") XHTML 1.1 XHTML + RDFa XHTML Basic 1.0 XHTML Basic 1.1 XHTML Mobile Profile 1.2 XHTML-Print 1.0 XHTML 1.1 plus MathML 2.0 XHTML 1.1 plus MathML 2.0 plus SVG 1.1 MathML 2.0 SVG 1.0 SVG 1.1 SVG 1.1 Tiny SVG 1.1 Basic SMIL 1.0 SMIL 2.0 Only if Doctype is missing Validate HTML fragment Use Doctype: HTML 4.01 XHTML 1.0 List Messages Sequentially Group Error Messages by Type Show Source Clean up Markup with HTML-Tidy Show Outline Validate error pages Verbose Output This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc. If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets , MobileOK content , or to find broken links , there are other validators and tools available. As an alternative you can also try our non-DTD-based validator . Home | About... | News | Docs | Help & FAQ | Feedback | Contribute | Copyright © 2024 World Wide Web Consortium . W3C ® liability , trademark and permissive license rules...
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