html-xml-lang-mismatch

html-xml-lang-mismatch is a Web performance & accessibility skill for AI agents, published by thedaviddias in the Front-End-Checklist repository on GitHub. Skillspace rates html-xml-lang-mismatch C (74/100) and it passed the safety scan; the rating is based on static analysis only.

Use when applies to XHTML documents and polyglot HTML documents that must parse correctly as both HTML5 and XML. For modern HTML5-only documents, only `lang` is needed and `xml:lang` is not required. Check when auditing documents served as application/xhtml+xml or documents that include both attributes.

Grade
C
Quality
74 / 100
Safety
Passed
GitHub stars
73,218

Unproven: rated by static analysis only, not yet compared head-to-head.

This rating describes the version of the repository we crawled; it may have changed since, so go by its current files.

View source on GitHubthedaviddias/Front-End-Checklist

Our review

Architecture
100 / 100
Maturity
Structured: ships references or scripts
Security scan
No issues found
License
Not declared. Check the repository before reusing it.
Adoption
Adopted by 0 other repositories, in 1 collections
Scope
Portable: works in any project. General XHTML lang/xml:lang accessibility check

Not checked yet

  • Not judged on the rubric yet (not a contender in its category)
  • No blind task eval yet
  • Sibling files (scripts, references) not fetched; security scan covers SKILL.md only

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