Document Language Tag Checker
Find missing or inconsistent language and direction declarations in HTML. Runs locally and returns a reviewable report.
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Input is limited to 200000 characters. Results are computed locally and exported as JSON. Up to 200,000 characters. Review the settings before running.
Your result
How to use Document Language Tag Checker
- Paste the HTML document.
- Run the local check.
- Review missing or inconsistent declarations and download the report.
Declarations, not inference
The checker inspects explicit HTML lang and dir attributes. It does not guess a language from prose.