A11y Check

About

Check any web page against WCAG 2.2 — including pages behind logins, on private or internal networks, or anywhere a normal online scanner can't reach.

A11y Check runs entirely inside your browser, scanning the page exactly as it's rendered in your current tab — after JavaScript has run and after you've logged in. Nothing is sent to a server; everything happens locally.

Click the toolbar icon, then "Check this page" to get an instant report covering:

• Missing or poor image alt text
• Heading structure and page landmarks
• Form labels and error handling
• Link purpose and generic link text
• Colour contrast — calculated from actual rendered styles, not guesswork
• Target size — measured from the real rendered size of buttons and links
• Keyboard focus order and ARIA usage
• WCAG 2.2's newer criteria: dragging movements, target size, focus not obscured, consistent help, redundant entry, accessible authentication, and more

Each issue links to the relevant WCAG 2.2 reference, comes with plain-English fix suggestions, and can be jumped to directly on the page with "Show on page."

Export results as CSV, print as PDF, or re-scan after making a fix — all without leaving the tab you're working on.

Built by the team behind a11ycheck.app, a free web-based WCAG 2.2 checker.

Automated checks catch around 40% of accessibility issues — always follow up with manual keyboard and screen reader testing.