markup-validator
https://github.com/w3c/markup-validator
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- Issues
- Google Podcasts namespace is not recognized
- Wrong list in new features in wcag 2.2
- Mathml validation - global attributes not recognized.
- Orphaned FAQ reference in validation error message
- Native checkbox within ARIA checkbox passes validator
- ARIA radio within ARIA radio passes validator
- ARIA checkbox within ARIA checkbox passes validator #73
- Native radio within ARIA radio passes validator
- https://validator.w3.org/check?uri=referer checks random page totally unrelated to the actual referring page
- warning: failed to load external entity "http://www.w3.org/TR/MathML2/dtd/isonum.ent"
- Docs
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