ClearUtils

SEO Tools

HTML Lang Attribute Checker

Check whether pasted HTML includes a usable html lang attribute for accessibility and SEO QA.

Pasted HTML stays in your browser. No crawling, rendering, or storage.
HTML tag
found
Lang value
en
The html tag includes a practical lang attribute.

HTML Lang Attribute Checker workflow tips

Use this pasted-input SEO QA tool during accessibility, internationalization, and template reviews. Confirm the document-level lang attribute first, then compare it with hreflang alternates, titles, canonical tags, and viewport markup. This tool does not crawl live pages or validate reciprocal hreflang relationships.

What this tool does

HTML Lang Attribute Checker finds the opening html tag, reports the lang value, and flags missing or unusual language tags from pasted page-source snippets.

Common use cases

Check pasted HTML for a document-level lang attribute during accessibility, internationalization, and SEO QA reviews.

Use HTML Lang Attribute Checker during a pasted-input SEO QA pass before publishing or handing off a page. It helps review copied metadata, snippets, headings, social tags, or canonical signals without crawling a live URL.

How to use it

  1. Paste an opening html tag or copied page source into the checker.
  2. Review whether the html tag was found and whether the lang attribute looks practical.
  3. Copy the detected language code into QA notes or continue with hreflang and metadata checks.

Example workflow

Paste the relevant title, description, tag block, heading outline, or canonical markup from your draft page. Review the warnings and preview output, make edits in your CMS or document, then recheck the same pasted input before publishing.

Privacy note

Client-side only: this pasted-input SEO QA tool runs in your browser and does not crawl live URLs, render pages, upload HTML, or store input.

FAQ

Does this lang checker crawl my page?

No. It only checks pasted HTML in your browser and does not fetch live URLs, render pages, upload source, or store input.

Why does the html lang attribute matter?

The lang attribute helps browsers, assistive technology, translation tools, and search systems understand the document language.

Is this the same as hreflang validation?

No. The html lang attribute describes the current document language. Hreflang tags describe alternate language or regional URLs.

Explore more tools

Browse the SEO Tools hub or continue with the SEO QA Toolkit when this task is part of a larger workflow.