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Accessibility Insights vs ARC Toolkit: catalog facts
Accessibility Insights	ARC Toolkit
Free Free and open source, published by Microsoft.	Free Free to install from the Chrome Web Store.
Windows, Browser extension	Browser extension
FastPass catches common issues in a few minutes Guided assessment against WCAG 2.1 AA	Runs inside the browser on the current page Uses TPGi's ARC rules engine
Web extension targets Chrome and Edge only Desktop tool is Windows only	Checks one page at a time Automated checks do not replace manual testing
Downloadable app, Browser extension	Browser extension
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 23, 2026

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