Compare software

Pa11y vs Accessibility Checker: catalog facts
Pa11y	Accessibility Checker
Free Free and open source.	Freemium Free testing features are available; Equalize Digital also sells paid options.
Self-hosted, Command line	Self-hosted
Command-line tool for quick one-off accessibility checks CI tool for testing a list of pages in builds	Reports appear directly in the WordPress editor Checks run as content changes
Automated checks catch only part of all accessibility problems The dashboard requires running your own server	Works only with WordPress Automated checks cannot catch every accessibility issue
Downloadable app, Self-hosted	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.