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axe DevToolsButton Contrast Checker
Freemium

The browser extension has a free tier; wider toolkits are paid and sold through Deque.

 Free

Free to use.

Web, Browser extension Web
  • Built on the widely used axe-core rules engine
  • Checks run directly in the browser on the current page
  • Tests all buttons and links on a page at once
  • Checks default, hover and focus states
  • Automated checks do not replace manual accessibility testing
  • Advanced features are enterprise products sold through sales
  • Only checks buttons and links, not all text on the page
  • Needs a publicly reachable webpage to scan
Hosted service, Browser extension Web application
Closed 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 Needs internet

Checked September 23, 2026

Checked October 2, 2026

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