Accessibility Checker
Find common accessibility problems: missing alt text, labels, link names, headings and more.
About the Accessibility Checker
About one in six people live with a disability, and many use screen readers, keyboard navigation or zoom to browse the web. An accessible website works for them – and it is increasingly a legal requirement, for example under the European Accessibility Act, which applies to many businesses from June 2025. Accessibility also overlaps with SEO: alt text, clear headings and descriptive links help search engines too.
This checker reads the HTML of a page and tests 17 common problems from the WCAG 2.2 guidelines: page language and title, blocked zoom, images without alt text, form fields without labels, buttons and links without names, vague link text, heading structure, duplicate IDs, frames without titles, hidden focusable elements, positive tabindex, autoplaying sound, data tables without headers, the main landmark and skip links. You get a score, a clear explanation of each problem and a list of the exact elements to fix.
Frequently asked questions
Does a high score mean my site is WCAG compliant?
No. Automated tests find a share of the problems. Colour contrast, keyboard use, focus order and content quality need manual testing, ideally with real users and a screen reader.
What are the most common accessibility problems?
Low colour contrast, missing alt text, empty links and buttons, form fields without labels and missing page language – the same few problems appear on most websites.
Does accessibility help SEO?
Yes, indirectly. Alt text, descriptive link text, a clear heading structure and a page title help search engines understand the page as well as screen readers.