Matan · WCAG · Perceivable

Language on every page

Templates should declare lang consistently so a crawl does not find mixed missing attributes.

Pass condition in our engine: This page has html lang. Site-wide coverage needs a full crawl.

1. Problem description

On a full report we compare all crawled pages. On one URL we verify that this document declares lang. A marketing microsite that reused an old template without lang will fail here even if the homepage is fine.

2. Most common causes

  • One locale template missing the attribute.
  • Iframe-injected pages without a full HTML document.

3. How to fix it

  1. Fix the shared layout so every HTML response includes lang.
  2. Run a full report to find stragglers.

Test this check

We fetch only this URL (plus robots.txt / llms.txt at the domain root when the check needs them). We do not crawl the rest of the site like a full report.

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