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HTML5 Conformance Checker

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I got the following warning using the W3C validator:

Using experimental feature: HTML5 Conformance Checker

What exactly does it mean? That I can't count on this validator?

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Joel Avatar asked Oct 21 '10 15:10

Joel


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2 Answers

The warning "Using experimental feature: HTML5 Conformance Checker." means that the validator is checking your markup as HTML5, but since the w3c hasn't agreed on every part of the HTML5 standard, you should take what the validator says with a grain of salt, because it is prone to change until the standard is complete. The warning does not mean that there is anything wrong with your code, but if you want to get rid of the warning, try validating with a Doctype of "HTML 4.01 Strict".

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Jo Sprague Avatar answered Oct 14 '22 17:10

Jo Sprague


HTML5 is an unfinished draft so the validator is:

  • New and subject to more bugs than one that has been in production for years (since HTML5 has abandoned the SGML legacy of its predecessors--you can't just use a DTD based validator)
  • Comparing your document to a moving target (which might have fallen behind)
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Quentin Avatar answered Oct 14 '22 15:10

Quentin