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Accessibility Insights vs Accessibility Checker: catalog facts
Accessibility Insights	Accessibility Checker
Free Free and open source, published by Microsoft.	Freemium Free testing features are available; Equalize Digital also sells paid options.
Windows, Browser extension	Self-hosted
FastPass catches common issues in a few minutes Guided assessment against WCAG 2.1 AA	Reports appear directly in the WordPress editor Checks run as content changes
Web extension targets Chrome and Edge only Desktop tool is Windows only	Works only with WordPress Automated checks cannot catch every accessibility issue
Downloadable app, Browser extension	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is 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.