Warning Accessibility
Missing lang attribute
- Severity
- Warning
- Impact
- Low
- Effort to fix
- Low
- Issue code
lang_missing
Why it matters
The html lang attribute tells screen readers and search engines which language the page uses.
How to fix it
Add lang to the html element, for example <html lang="en">.
How it affects your score
Finding this issue on any page costs the Accessibility score 3 points, plus up to 12 more depending on the share of crawled pages affected. Weakens rankings, crawling or measurement. Fix after critical issues.
Find the affected URLs
Open Crawl > Issues and pick Missing lang attribute. Each affected URL is listed with its evidence, and Copy URLs or Export URLs hands the list to a developer. The issue also appears in the Action Plan, ranked by impact (low) and effort (low), and in the issues CSV under the code lang_missing. After fixing, run a new audit and use Compare to confirm the URLs moved to fixed.