Accessibility Scanner — WCAG, ADA & Color Contrast Checker

Test any page for WCAG issues: color contrast, alt text, form labels, headings. Outlined where they are. No login, no email.

See exactly what's broken on any page, in place. Accessibility Scanner runs the axe-core engine against the page you're on and outlines every failing element right where it sits, so you can see the problem instead of reading a list of selectors. NEW IN 0.2.0: IT SCROLLS THE PAGE FIRST Most scanners test whatever happened to be on screen, so anything that loads as you scroll never gets checked and the page looks cleaner than it is. This version scrolls first, waits for images, fonts and fade-in animations, then tests. On one site we tested, that was the difference between finding 3 contrast failures and finding 12, with identical colours throughout. The other nine were always broken; nothing could see them. If you used an earlier version, expect more issues on the same page. They were already there. WHAT IT CHECKS • Color contrast, including text over CSS gradients, which most tools skip • Missing or unhelpful image alt text • Form inputs with no associated label • Links and buttons with no accessible name • Heading order and document structure • ARIA misuse and landmark problems HONEST BY DESIGN Automated testing reliably catches the machine-checkable part of WCAG, roughly a third of the criteria. The rest needs human judgement. We tell you which is which, and we never issue a compliance badge or claim your site is ADA compliant. Nothing here is legal advice, and no automated tool can make a site legally compliant. NO ACCOUNT NEEDED No login, no email, no trial. Open the extension, scan the page, read the result. SCAN FROM ANYWHERE ELSE TOO The same engine runs as a CLI, a GitHub Action for CI, and an MCP server so AI agents can audit pages directly: https://accessibilityscanner.app/integrations Built on axe-core by Deque Systems.