HTML Checking for Large Sites

Rocket Validator automatically checks your pages on the W3C Validator.

This document appears to be written in X but the “html” start tag has “lang=Y”.

Based on the content of the document, the W3C validator has determined that the main language doesn’t match the one specified in the lang property of the <html> tag. Check the language of the document, if it matches the lang property you can safely ignore and mute this warning.

Related W3C validator issues

Still checking your large sites one page at a time?

Save time using our automated web checker. Let our crawler check your web pages on the W3C Validator.