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Free WCAG 2.2 accessibility checker.

This free accessibility checker tests a web page against the WCAG 2.2 AA criteria that can be checked automatically: text contrast, image alt text, form labels, button names, page language, link text and heading structure. It measures contrast from the page’s real CSS and shows you the contrast score and the top accessibility issues in about a minute.

  1. Fetch the live pageWhiskers, waiting
  2. Read the documentWhiskers, waiting
  3. Weigh every assetTiger, waiting
  4. Check colour contrast (WCAG AA)Shadow, waiting
  5. Run heuristics, speed & a11y checksPaws, waiting
  6. Walk the user flowsWhiskers, waiting
  7. Score itTiger, waiting

Paste any homepage. Your report lands here in about a minute.

Free · no sign-up · one page per scan · results in about a minute

What it checks

What the accessibility checker tests

  • 1.4.3Text contrast (AA)

    Every text colour is resolved against its background from the page’s CSS and checked for 4.5:1 (3:1 for large text). Pairs that cannot be resolved exactly are excluded, never guessed.

  • 1.1.1Alt text on images

    Images with no alt attribute, so screen-reader users hear a filename or nothing at all.

  • 1.3.1 · 3.3.2Form labels

    Inputs with no label, aria-label or aria-labelledby. Placeholder text alone does not count.

  • 4.1.2Button names

    Buttons that contain only an icon or SVG, which assistive technology announces as just “button”.

  • 3.1.1Page language

    A missing lang attribute on the html element, which makes screen readers guess the pronunciation.

  • 2.4.4 · 1.3.1Link text & headings

    Links that only say “read more” or “click here”, and heading levels that skip, breaking navigation by heading.

Reading your results

How to read the report.

Contrast score
The share of the measured text, by characters, that passes WCAG AA, out of 100. If too little of the text could be measured exactly, no score is shown rather than a misleading one.
a11y findings
Findings tagged a11y are accessibility issues. High means people using assistive technology are likely blocked; Medium means they are slowed down.
Overall score
The 0–100 score also includes usability, speed and SEO, so a page can pass contrast and still score low overall.
What a pass means
No automated tool can confirm full WCAG conformance. A clean result here means the automatically checkable basics are in place; keyboard, focus and screen-reader testing still need a person.

Beyond the scan

Want the fixed version?

A list of issues is a start. Clikiti also rebuilds the homepage with the same brand and real content, fixing what the scan found, so you can see the better version instead of imagining it.

Own the website?

Get a free homepage redesign concept.

Tell us your website and a professional web agency will send you a redesigned homepage concept. No cost, no obligation.

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Run an agency?

Send prospects the audit and the redesign.

Find prospects, scan their sites and send each one a finished homepage redesign on their own brand, as one link, before the first call.

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Questions

Accessibility checker FAQ.

Does this check WCAG 2.2 AA compliance?

It checks the WCAG 2.2 AA criteria that can be tested automatically from the page’s code: contrast (1.4.3), alt text (1.1.1), labels and names (1.3.1, 3.3.2, 4.1.2), page language (3.1.1), link purpose (2.4.4) and heading structure. Full conformance also needs manual testing, which no automated checker can replace.

How is colour contrast measured?

From the page’s actual CSS: each text element’s colour is resolved against the background behind it, including CSS variables and transparency, and the WCAG contrast ratio is calculated. Pairs that cannot be resolved exactly are left out, and the share measured is taken into account before a score is given.

Does it test keyboard navigation or focus order?

No. The free scan reads the page’s code and styles; it does not drive a keyboard through the page. Test tab order and visible focus by hand, or with a screen reader.

Is an accessibility overlay a fix for these issues?

No. Overlays do not add missing labels or alt text to the underlying code reliably. Fixing the markup and colours themselves is what makes a page accessible.

Is the accessibility checker free?

Yes, with no account. You get the contrast score, the overall score and the top issues. A limit of a few scans per hour per connection applies.

Which page does it check?

The single URL you enter. Check your homepage first, then the pages with forms, such as contact or checkout.

More free tools

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