Compare software

ARC ToolkitSa11y
Free

Free to install from the Chrome Web Store.

 Free

Free and open source.

Browser extension Web, Self-hosted
  • Runs inside the browser on the current page
  • Uses TPGi's ARC rules engine
  • Shows issues in place with plain fix instructions
  • Over 80 checks with rules you can switch off
  • Checks one page at a time
  • Automated checks do not replace manual testing
  • Aimed at content issues, not a full code audit
  • Needs to be added to a site or CMS by a developer
Browser extension Self-hosted
Closed source Open source
License not stated License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked September 24, 2026

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