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Accessibility checking

Rocket Validator looks for accesibility violations on your pages using the axe-core accessibility engine, hosted on our own servers and integrated into our web crawler. You don't need to buy an additional license, everything's already included in your Pro account at Rocket Validator.

A11Y check: lang attribute must have a valid value

Accessibility rule: The language specified in the HTML document must be one of the valid languages to ensure text is pronounced correctly for screen reader users.

Learn more about this A11Y rule at Deque University >>

Validate accessibility and HTML5 on large sites, starting at $12/week. Start here