Document language: what it measures

The check reads the response your server returns and records what it found. That observation is stored with the report, so reopening an old audit shows what was true on the day it ran rather than what the page says now. It is not a live measurement, and it is not a model’s opinion of your page.

Ruleset a11y-document-language · category a11y · reported but never counted

• —Whether the page is actually written in that language.
• —What to do about a page that mixes languages, which the specification leaves to the author.

Set lang on the html element to the language the page is written in.

Then verify it yourself rather than trusting the next report: reload the page, view the source, and look at the thing the check described. A check you can falsify in ten seconds is the only kind worth having.

The free meta tags checks this on one URL and needs no signup — the same rule, on the same page, with no credit spent. When you want the whole page assessed, an audit is covered by the trial credit.

• Heading structure

All checks and their definitions as JSON