HTML Lang Attribute Checker

Confirm that every page declares the correct <html lang=""> attribute for accessibility and international SEO.

HTML source

Ensure assistive tech speaks the right language

Without a proper lang attribute, screen readers default to English and search engines miss regional context. This checker gives you a quick yes/no answer before launch.

Accessibility

Lang Inspector

<html lang="en-us">
  ...
</html>

How this HTML Lang Attribute Checker works

This accessibility compliance tool audits HTML documents detecting missing or incorrect lang attributes that specify page language, essential for screen readers providing proper pronunciation and search engines understanding content targeting. The checker scans HTML source identifying root <html> tags, verifies lang attribute presence, validates ISO 639-1 language codes against standards, and flags mismatches between declared language and actual content language through basic heuristics. Reporting categorizes pages by language declaration status, highlights multilingual sites missing per-page language specifications, and recommends appropriate codes based on content analysis. Bulk mode processes entire sitemaps identifying patterns where CMS templates lack lang attributes, integration with deployment pipelines prevents publishing pages without proper language declaration, and competitive analysis compares international site implementations. Applications include preparing websites for WCAG accessibility certification requiring proper language markup, diagnosing why screen readers mispronounce content, troubleshooting international SEO where search engines serve wrong-language pages to users, or auditing client sites before multilingual expansion ensuring infrastructure supports proper language targeting.

How to Use

Paste HTML

Provide any HTML snippet or full page source.

Run validation

The checker locates the <html> element and inspects its lang attribute.

Fix issues

We explain whether the attribute is missing, empty, or invalid.

Frequently Asked Questions

What does the HTML lang attribute checker do?

It checks whether your page has a correct lang attribute (like lang="en") so browsers, screen readers, and search engines can understand the page language.

Why is the lang attribute important?

It improves accessibility by helping screen readers pronounce words correctly. It can also reduce language targeting confusion for users and search engines.

What value should I use for lang?

Use a valid language code like en, fr, hi, or es. Add a region only when needed, like en-US or en-GB, when the content is localized for that audience.

Should I set lang on every page?

Yes. Each page should have the correct lang on the <html> tag. If a section of the page is in another language, you can also add lang to that specific element.

Is this HTML lang checker safe to use?

Yes. It runs 100% client-side, so your HTML is processed locally in your browser and never uploaded to a server.

Related Tools

The HTML Lang Attribute Checker is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

Featured on