HTML Checking for Large Sites

Rocket Validator automatically scans your sites for accessibility issues using the W3C Validator, hosted on our own servers and integrated into our web crawler.

Try Rocket Validator Pro

This document appears to be written in English but the “html” start tag has an empty “lang” attribute. Consider using “lang="en"” (or variant) instead.

Based on the content of the document, the W3C validator thinks that it’s written in English. Consider explicitly specifying the language using the lang property.

Example:

<html lang="en">

Learn more:

Related W3C validator issues