Validating HTML5 Documents Online


How To Validate HTML5 Documents Online?



If you have just finished a new HTML5 document, and you want to make sure that confirms with the HTML5 specification, you can use the HTML online validator at

There are 3 ways you can use this validator:

  • By URL - Specify the URL where your XHTML document is located, and click "Check".
  • By File Upload - Use the "Browse" to locate an XHTML document on your local hard disk, and click "Check".
  • By Direct Input - Copy & paste the content of an XHTML document to the input area, and click "Check".

The validator will return a page with validation result.

HTML validator:
HTML validator:

Note that this validator does not support XHTML5 documents.


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2024-03-17, 1929🔥, 0💬