See each detected issue with a line reference and a plain-language explanation of what needs attention.
CHECK HTML ACCESSIBILITY
HTML Accessibility Checker Online
Scan HTML for common accessibility problems in images, headings, links, forms, buttons, tables, page language and document metadata.
Free to useNo sign-upPrivate browser processing
INPUTHTML source
12 lines250 B
OUTPUTAccessibility report
0 B
Run the check to see findings by line.
or press Ctrl + Enter
WHY USE IT
A focused tool for reliable HTML work
Review image alternatives, form labels, heading order, link names, button names, iframe titles, table captions and duplicate IDs.
Catch frequent markup mistakes before completing keyboard, screen-reader, contrast and other manual accessibility tests.
HOW IT WORKS
Three quick steps
- 01Paste the page HTML
Add a complete document or the component you want to review.
- 02Run the accessibility check
The browser inspects important elements and reports likely barriers.
- 03Fix and test manually
Correct the findings, rerun the scan and finish with keyboard and assistive-technology testing.
COMMON QUESTIONS
Accessibility Checker FAQ
Is this HTML accessibility checker a complete WCAG audit?
No automated checker can prove full WCAG conformance. This tool finds common markup problems and should be followed by keyboard, screen-reader, zoom, motion and color-contrast testing.
Why can an empty image alt attribute be valid?
An empty alt attribute can correctly hide a purely decorative image from assistive technology. The checker warns when alt is missing, not when it is deliberately empty.