Quality Assurance & Testing
HTML XML Lang Mismatch
The skill validates XHTML and polyglot HTML documents to ensure they parse correctly as both HTML5 and XML, checking for consistent `lang` and `xml:lang` attributes. It is essential for developers and QA engineers who serve content as `application/xhtml+xml` or include both attributes in a single document. The tool guarantees proper language declaration across browsers and XML parsers.
- Publisher / source
- thedaviddias/Front-End-Checklist (found on GitHub top repositories)
- Upstream record
- thedaviddias/Front-End-Checklist
- Version
- Version 1
- Published
- Publication review
- Approved for publication · recorded passed scan 2026-11-03
- Content fingerprint
c338cfc6b6b63cccc7c27073d5272534c045eca395cb51c482e4c3640273f81b