[ARCHIVED CONTENT] The W3C Markup Validation Service

This snapshot, taken on

05/05/2011

, shows web content acquired for preservation by The National Archives. External links, forms and search may not work in archived websites and contact details are likely to be out of date.

More about the UK Government Web Archive

See all dates available for this archived website

The UK Government Web Archive does not use cookies but some may be left in your browser from archived websites.

More about cookies

Validate by URI
Validate by File Upload
Validate by Direct Input

Validate by URI

Validate a document online:

Address:

More Options

Character Encoding		Only if missing
Document Type		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		Only if missing
Document Type		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:

More Options

Validate Full Document
Use Doctype:		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.