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Free tool

Scan any page for accessibility issues

Paste in a URL and we will fetch the page and scan its HTML against 14 common WCAG 2.2 failures -- missing alt text, broken heading structure, unlabelled form fields, and more. Free, instant, no signup, and honest about what it cannot see.

Scan a pageWhat it can't catch ↓
Try it

Enter a URL, see the result below.

We are already showing a live scan of our own homepage so you can see exactly what a result looks like. Replace the URL with your own page and scan it whenever you are ready.

We fetch the page's HTML on our server and scan it -- nothing is installed, and we never see anything you have not made publicly reachable.

What it checks

14 checks, each mapped to a WCAG criterion.

Every finding names the exact WCAG 2.2 success criterion it relates to, explains who it affects and why, and shows the offending code with a plain-English fix.

Images missing alt textWCAG 1.1.1
Unhelpful or filename-style alt textWCAG 1.1.1
Missing, multiple, or skipped heading levelsWCAG 1.3.1
Missing or invalid <html lang>WCAG 3.1.1
Missing or generic page titleWCAG 2.4.2
Form fields with no associated labelWCAG 1.3.1 / 4.1.2
Links with no text, or generic text like "click here"WCAG 2.4.4
Buttons with no accessible nameWCAG 4.1.2
Viewport meta that blocks pinch-to-zoomWCAG 1.4.4
Positive tabindex valuesWCAG 2.4.3
Missing "skip to content" linkWCAG 2.4.1
Data tables with no header cells or captionWCAG 1.3.1
iframes with no titleWCAG 4.1.2
Deprecated presentational markupWCAG 4.1.1
Be honest with yourself

What this tool cannot do.

This is a static scan of the initial HTML your server returns -- nothing more. It is genuinely useful as a first pass, and it will catch real, fixable problems. It is not a full audit, and treating a clean result as proof of accessibility would be a mistake.

  • It only sees the initial HTML response, not anything rendered afterwards by JavaScript -- a lot of modern sites build most of their page client-side, which this scan cannot see.
  • It cannot judge colour contrast in visual context (use our Contrast Checker for that), or spot content that is visually hidden but not marked up as such.
  • It cannot test keyboard traps, focus order in practice, or how a real screen reader actually reads the page out loud.
  • It cannot judge whether alt text is accurate, only whether it exists and is not obviously a placeholder.
  • Automated tools like this one catch roughly a third of accessibility issues at best -- the rest need a person to use the page.
Questions

Frequently asked

Is this a full accessibility audit?

No. It is a static scan of the page's raw HTML against a checklist of common WCAG 2.2 failures. It is a genuinely useful first pass, and it is free, but it is not a substitute for a manual audit by someone who understands assistive technology and can actually use the page with a screen reader or keyboard alone.

What does it actually check?

Things a computer can verify from the HTML alone: whether images have alt text, whether headings are structured properly, whether form fields have labels, whether links and buttons have discernible names, and a handful of other common failures. The full checklist is on this page.

Why can it not check colour contrast?

Contrast depends on how colours are actually rendered on screen -- CSS variables, gradients, background images and overlays all affect it, and a lot of that only resolves in a real browser. Use our dedicated Contrast Checker for that, which does render real colour values.

Do you store the URLs people scan?

We fetch the page to run the scan and show you the result. We do not publish or share the URLs people submit.

Beyond the scan

For the two-thirds a scan cannot see.

Automated scans catch roughly a third of accessibility issues at best. The rest -- how the page actually feels with a screen reader, real keyboard navigation, colour contrast in visual context -- need a trained person to check. Tell us a little about your site and we will get back to you about what a proper review would involve.

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