HTML Accessibility Checker

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Paste HTML and find missing alt text, labels, heading and ARIA issues.

How to use the HTML Accessibility Checker

1Paste HTML or drop an .html file.
2Review the issues, grouped by severity and WCAG rule.
3Click an issue to see the element and how to fix it.

Color Contrast Checker
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Check text and UI colors against WCAG AA and AAA contrast rules.
Color Blindness Simulator
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See images and palettes as people with color vision deficiencies do.
Palette Contrast Grid
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Test every color pair in a palette for accessible contrast at once.