About the W3C HTML Validation Service

This service checks HTML documents for conformance to W3C HTML and XHTML Recommendations and other HTML standards. Related resources include:

• Information on the source code availability
• The to-do list for the service
• DTDs (document types) supported by this service (the SGML catalog)
• The www-validator mailing list
• How to provide feedback on this service

Other resources

• W3C's HTML home page
• The W3C HTML 4.01 Recommendation
• The W3C XHTML 1.0 Recommendation
• The WDG HTML validator is another excellent online validation service
• A Real Validator is a shareware HTML syntax checker for Windows systems, from the author of the WDG validator

Credits

This service uses:

• James Clark's excellent SGML parser,
• The libwww-perl library by Gisle Aas and Martijn Koster for retrieving documents.
• Patches and ideas from Terje Bless, Liam Quinn, and others.

The first online HTML validation service was created by Dan Connolly and Mark Gaither.

Gerald Oskoboiny
$Date: 2000/04/28 17:13:47 $