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W3C HTML Validation Service

W3C's easy-to-use HTML validation service, based on an SGML parser.

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URL
validator.w3.org
Version
Jan 17, 1999 - 00:08:16
Archive
Internet Archive (archive.org)

Linked sites

github.comgithub.com twitter.comtwitter.com europa.eu.inteuropa.eu.int opensource.orgopensource.org

Linked pages

James Clarkjclark.com

Referencing pages

HTML Validation Servicevalidator.w3.org validator.w3.orgvalidator.w3.org