WCAG compliance checker
WCAG 2.1 compliance checker for any web page
Every finding is mapped to its WCAG success criterion and conformance level, with the failing element, the reason it fails and the fix. Two free scans a day.
What the scan checks
Perceivable (1.x)
Text alternatives, captions and media, info and relationships, meaningful sequence, use of colour and contrast minimums.
Operable (2.x)
Keyboard access, bypass blocks, page titles, focus order, link purpose, headings and labels, visible focus.
Understandable (3.x)
Page language, consistent navigation and identification, error identification, labels and instructions.
Robust (4.x)
Valid parsing, unique IDs, name/role/value on custom controls and status messages.
AI finds it. A human verifies it.
Automated checkers are fast but they guess. Every finding you act on is reviewed by a person before it becomes a fix, so you are not chasing false alarms or shipping a change that makes accessibility worse.
Step 1 — AI assistance
- Scans the page against WCAG 2.1 A and AA rules
- Measures real colour contrast ratios from rendered styles
- Flags missing alt text, labels, headings and broken links
- Drafts a plain-English fix for each issue found
Step 2 — human verification
- A reviewer confirms each flagged issue is real, not a false positive
- Judgement calls automation cannot make are checked by hand
- Fix guidance is corrected to match how your page is actually built
- You get a record of what was checked and by whom
No automated tool can certify a site as ADA compliant on its own — roughly a third of WCAG criteria need human judgement. That is exactly the part we do not skip.
Findings you can hand to a developer
A WCAG report is only useful if someone can act on it. Each finding here carries the selector of the element that failed, the criterion number and level, an explanation of who it affects, and concrete fix steps — not just a rule name and a red dot. Filter by impact or category and export that slice as a ticket-ready PDF.
Conformance is a claim you make, not a badge a tool grants
Under WCAG, conformance is claimed for whole pages and complete processes, at a stated level, with the criteria you met. An automated checker cannot make that claim for you. What it can do is clear the machine-detectable failures quickly and cheaply, so the human review that follows is spent on judgement rather than on counting missing alt attributes — and that human review is built into how this service works.
Common questions
- Which WCAG version and level does the checker test?
- WCAG 2.1 Level A and Level AA — the level referenced by ADA settlements in the US, Section 508, the European EN 301 549 standard and the UK public sector regulations. Each finding names its success criterion, such as 1.1.1 Non-text Content or 1.4.3 Contrast (Minimum).
- Does passing the checker mean my site is WCAG compliant?
- No. Automated testing covers the machine-checkable portion of WCAG. Criteria like meaningful sequence, sensible alt text or a logical focus order need a person to judge, which is why the findings you act on are verified by a human reviewer.
- Can I see which element failed?
- Yes. Open any finding to see the failing node's selector, a plain-English explanation of the problem, the success criterion and level, the fix steps, and a link to the official WCAG guidance for that criterion.
- Can I filter the report before exporting it?
- You can filter by impact and by category, then export just that set as an accessible PDF or HTML report — handy when you are handing a specific slice of work to a developer.
- How many WCAG checks run per scan?
- Over a hundred rules derived from the standard's success criteria run on every scan, alongside colour contrast, broken link and SEO checks. The free tier includes all of them, twice a day.
Check your site in a minute
Paste your address, get a scored report of every accessibility and SEO issue found, and export it as an accessible PDF.
Start a free scan