A11yTrail — Accessibility Checker (WCAG & ADA)

Free WCAG & ADA accessibility checker — scan any page for accessibility issues and get fix guidance.

A11yTrail is a free, one-click accessibility checker for WCAG and ADA compliance. Click the toolbar icon and it scans the page you're on for accessibility issues using the open-source axe-core engine, the same engine trusted by professional accessibility testing tools, running entirely in your browser. Use A11yTrail as your in-browser WCAG checker, ADA compliance checker, and accessibility scanner for any web page. You get: - Accessibility score: a severity-weighted grade so you know at a glance how the page is doing - Issues sorted by severity: critical, serious, moderate, and minor, with a clear breakdown - How to fix guidance: plain-language remediation steps for each accessibility issue, so you don't need to be a WCAG expert - WCAG level filter: filter by WCAG 2.2 level A, AA, or AAA - Copy for ticket: one click to paste an issue into Jira, Linear, or any bug tracker - Highlight on page: outline the affected element right where it lives - Learn more: jump to the official documentation for each rule - Needs review: see the items automated testing can't decide on its own - Export reports: download results as an HTML accessibility report or JSON Private by design. A11yTrail makes no network requests and collects no data. Everything runs locally, and nothing about the pages you scan ever leaves your browser. Built for agencies, developers, and designers who need a fast, free website accessibility test without the noise. Perfect for checking client sites, catching accessibility issues before launch, and working toward WCAG 2.2 and ADA compliance. The extension is a accessibility checker, WCAG checker, ADA compliance checker, accessibility scanner, website accessibility test, WCAG 2.2, accessibility issues, axe-core, color contrast, web accessibility A note on honesty: automated accessibility testing catches many issues, but not all of them. Keyboard navigation, focus order, meaningful alt text, and screen-reader flow still need a human. A11yTrail makes the automatable part fast, so you can spend your time on the judgment calls. Free, open-source-powered, and privacy-first. Add A11yTrail and run your first accessibility check in one click.