W3C Markup Validation Service: Upload Files

This form allows you to upload files from your computer and have them validated.

Validate Uploaded File

Validate by File Upload

File:

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.

If your document is on the Web, you can validate it with the same advanced options by entering its address instead.