Accessibility checker: see exactly which WCAG criteria you fail
Not a vague accessibility grade - every issue is mapped to a specific WCAG 2.1/2.2 success criterion and conformance level.
Run free accessibility auditFour categories of checks
Visual
Color contrast ratios, text resizing, and use-of-color issues that make content hard to perceive.
Keyboard & focus
Whether every interactive element is reachable and operable without a mouse, with a visible focus indicator.
Forms & labels
Whether inputs have programmatically associated labels a screen reader can announce.
Structure & semantics
Heading order, landmark regions, and ARIA roles/attributes that give assistive technology a correct map of the page.
Mapped to real WCAG success criteria
A sample of the checks and the exact success criterion each one maps to. The full audit covers dozens more.
| Check | Success criterion | Level |
|---|---|---|
| Images have alt text | 1.1.1 - Non-text Content | A |
| Sufficient color contrast | 1.4.3 - Contrast (Minimum) | AA |
| Buttons have accessible names | 4.1.2 - Name, Role, Value | A |
| Form inputs have labels | 1.3.1 / 3.3.2 - Info & Relationships / Labels or Instructions | A |
| Page has a valid html lang attribute | 3.1.1 - Language of Page | A |
| Document has a title | 2.4.2 - Page Titled | A |
| Headings are in a logical order | 1.3.1 / 2.4.6 - Info & Relationships / Headings and Labels | A / AA |
| Interactive elements are keyboard-focusable | 2.1.1 - Keyboard | A |
| Page allows skipping repeated blocks | 2.4.1 - Bypass Blocks | A |
| No duplicate ARIA IDs | 4.1.2 - Name, Role, Value | A |
How it works
A real browser render, not just static HTML parsing.
Paste your URL
A real browser renders the page - accessibility issues in JavaScript-rendered content are caught, not just static HTML.
Every audit mapped to WCAG
Each failing check is tied to a specific WCAG 2.1/2.2 success criterion and conformance level, not left as an unexplained warning.
Fix with AI guidance
Get a prioritized list with AI-written fixes, so you know exactly what to change and why it matters for that criterion.
Frequently asked questions
No. Automated tools like this one reliably catch roughly a third of WCAG success criteria - contrast, missing labels, ARIA misuse, and similar. Things like whether alt text is actually meaningful (not just present), logical reading order for screen readers, or cognitive load still need a human review. Treat this as a strong first pass, not a compliance certificate.
A is the minimum baseline, AA is the level most legal and organizational accessibility policies target, and AAA is the strictest and often impractical to fully meet. Most of what this audit surfaces is A or AA - the levels that matter for the majority of compliance requirements.
No - it complements one. Automated checks catch structural and markup issues fast and consistently; only testing with an actual screen reader (or a person who uses one) reveals whether the experience is genuinely usable, not just technically compliant.
Yes - contrast ratios are measured automatically against WCAG 1.4.3 during the audit, no manual color-picking required.
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Fix guides
Run a free accessibility audit
Every issue mapped to a specific WCAG success criterion and level.
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