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( Understandable / WCAG 3.1.1 )

Page is missing a language declaration

This check maps to Language of Page. Use the guidance below to confirm the issue, understand who it affects and ship a fix.

Serious Level A WCAG 3.1.1 — Language of Page

What’s wrong

The <html> element has no lang attribute or it is empty.

Why it matters

Screen readers use the lang attribute to select the correct voice, accent, and pronunciation rules. Without it, content may be read in the wrong language entirely.

How to fix it

Add lang="en" (or the appropriate language code) to the <html> element.

Before
<html>
After
<html lang="en">

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