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Button Contrast Checker vs WAVE: catalog facts
Button Contrast Checker	WAVE
Free Free to use.	Freemium The online tool and extensions are free; the API and stand-alone testing engine are paid.
Web	Web, Browser extension
Tests all buttons and links on a page at once Checks default, hover and focus states	Shows issues in place on the page Extensions for Chrome, Firefox and Edge
Only checks buttons and links, not all text on the page Needs a publicly reachable webpage to scan	Bulk testing requires the paid API or engine Automated results still need human judgement
Web application	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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