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Accessibility tools

Make the web more inclusive with accessibility testing tools. — 2 free, fast tools that run entirely in your browser.

All 2 Accessibility tools

Contrast Ratio Checker

WCAG AA & AAA compliance

Color Blindness Simulator

See colors as others do

Why use Accessibility tools?

100% Private

Every tool runs entirely in your browser. Your data is never uploaded — it stays on your device.

Instant & Free

No sign-ups, no installs, no limits. Open the tool and start using it immediately.

Works Everywhere

Mobile, tablet, desktop — all tools are responsive and work in any modern browser, offline-capable once loaded.