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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
"http://www.w3.org/TR/REC-html40/loose.dtd">
<html>
<head>
<title>W3C HTML Validation Service</title>
<link rev="made" href="mailto:gerald@w3.org">
<meta name="keywords" content="HTML, Hypertext Markup Language, Validation,
W3C HTML Validation Service">
<meta name="description" content="W3C's easy-to-use
HTML validation service, based on an SGML parser.">
</head>
<body bgcolor="#FFFFFF" text="#000000" link="#0000ee" vlink="#551a8b">
<p>
<a href="http://www.w3.org/"><img
src="http://www.w3.org/Icons/WWW/w3c_home" height=48 border=0
alt="W3C"></a>
</p>
<h1>W3C HTML Validation Service</h1>
<p>
Welcome to the W3C HTML Validation Service!
</p>
<p>
This is an easy-to-use HTML validation service based on an SGML
parser. It checks HTML documents for compliance with W3C HTML
Recommendations and other HTML standards.
</p>
<p>
Recent updates include:
</p>
<ul>
<li><a href="whatsnew.html#2000-01-26">Updated XHTML 1.0,
HTML 4.01 DTDs</a>
<small>(January 26, 2000)</small>
<li><a href="whatsnew.html#1999.08.24">Added support for HTML
4.01; updated XHTML 1.0 DTDs</a>
<small>(August 24, 1999)</small>
<li><a href="whatsnew.html#1999.04.08">Added username/password proxying</a>
<small>(April 8, 1999)</small>
<li><a href="whatsnew.html#1999.03.04">Added support for XHTML</a>
<small>(March 4, 1999)</small>
<li><a href="whatsnew.html#1999.02.25">Added support for
Japanese character encodings</a>
<small>(Feb 25, 1999)</small>
<li><a href="whatsnew.html">more...</a>
</ul>
<p>
You can also check your <a
href="http://www.w3.org/Style/CSS/">Cascading Style Sheets</a> using
W3C's <a
href="http://jigsaw.w3.org/css-validator/">CSS Validation Service</a>.
</p>
<hr>
<h2><a name="byURI">Validate Documents by URI</a></h2>
<p>
Enter the location of a document you would like validated:
</p>
<form method=GET action="/check">
Location: <input name="uri" size=50>
<table cellpadding=0 cellspacing=0>
<tr>
<td>
<input name="weblint" type=checkbox value=""> Include <a
href="http://www.weblint.org/">Weblint</a>
results
</td>
<td>
<input name="pw" type=checkbox value=""> run Weblint
in "pedantic" mode
</td>
</tr>
<tr>
<td>
<input name="ss" type=checkbox value=""> Show source input
</td>
<td>
<input name="outline" type=checkbox value=""> Show an outline of this
document<br>
</td>
</tr>
<tr>
<td>
<input name="sp" type=checkbox value=""> Show parse tree
</td>
<td>
<input name="noatt" type=checkbox value=""> exclude
attributes from the parse tree<br>
</td>
</tr>
</table>
<input type="submit" value="Validate this URI">
<input type="reset" value="Reset this form">
</form>
<hr>
<h2><a name="seeAlso">See Also</a></h2>
<ul>
<li><a href="whatsnew.html">Recent changes to this service</a></li>
<li><a href="news:comp.infosystems.www.authoring.html">The HTML
authoring newsgroup</a> (for help with HTML)
<li><a href="feedback.html">How to provide feedback on this service</a></li>
<li><a href="sgml-lib/catalog">DTDs (document types) supported by this
service</a> (the SGML catalog)</li>
<li><a href="/source/">Information on the source code availability</a></li>
<li><a href="todo.html">The to-do list for the service</a></li>
<li><a href="http://lists.w3.org/Archives/Public/www-validator/">The
www-validator mailing list archives</a></li>
<li><a href="http://www.w3.org/MarkUp/">W3C's HTML home page</a>
<li><a href="http://www.w3.org/TR/REC-html40/">The W3C HTML 4.0
Recommendation</a>
</ul>
<h2><a name="credits">Credits</a></h2>
<p>
This service uses:
</p>
<ul>
<li>
<a href="http://www.jclark.com/">James Clark</a>'s excellent <a
href="http://www.jclark.com/sp/">SGML parser</a>,
</li>
<li>
The <a href="http://www.linpro.no/lwp/">libwww-perl library</a>
by Gisle Aas and Martijn Koster for retrieving documents.
</li>
<li>
<a href="http://www.weblint.org/~neilb/">Neil Bowers</a>' HTML
style checker, <a
href="http://www.weblint.org/">Weblint</a>.
</li>
<!--
<li>
SGML error explanations written by Scott Bigham.
-->
<li>
Patches and ideas from Terje Bless, <a
href="http://www.htmlhelp.com/%7Eliam/">Liam Quinn</a>, and
others.
</ul>
<p>
The <a
href="http://lists.w3.org/Archives/Public/www-html/1994Jul/0015">first
online HTML validation service</a> was created by <a
href="http://www.w3.org/People/Connolly/">Dan Connolly</a> and <a
href="http://www.webtechs.com/markg/">Mark Gaither</a>.
</p>
<hr>
<address>
<a href="http://validator.w3.org/check/referer"><img
src="http://validator.w3.org/images/vh40.gif" height=31 width=88
align=right border=0 alt="Valid HTML 4.0!"></a>
<a href="/feedback.html">Gerald Oskoboiny</A><br>
$Date: 2000-01-29 00:08:45 $
</address>
</body>
</html>
|
