Accessibility Checker
Check web content for WCAG accessibility issues including contrast, alt text, and heading structure.
Paste HTML above, or load the example, then check for missing alt text, labels, landmarks, and keyboard access issues.
A page can pass a basic HTML syntax check and still be genuinely unusable for someone relying on a screen reader or navigating with low vision, a heading structure that skips from an h1 straight to an h4, text with a contrast ratio too low to actually read comfortably, or an image with no alt text at all, none of which show up as a markup error. This tool checks web content specifically against WCAG accessibility standards, flagging a contrast ratio that falls short, a missing alt attribute, or a heading structure that skips a level rather than just confirming the HTML itself is valid.
See moreSee less about the Accessibility Checker
Useful for catching a genuine WCAG compliance gap before it becomes a legal or an accessibility complaint, confirming a heading hierarchy is structured correctly for screen reader navigation, or checking whether a design's color choices actually meet a minimum contrast standard.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline