Free WCAG Compliance Checker
Instantly validate your website against WCAG 2.1 Level AA — the international standard for web accessibility. Get actionable results in 60 seconds.
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The 4 WCAG Principles
WCAG 2.1 is built on four core principles. Our checker tests all of them automatically.
Perceivable
Information must be presentable to users in ways they can perceive.
- Alt text for images
- Captions for videos
- Color contrast ratios
- Text resize support
Operable
UI components and navigation must be operable by all users.
- Keyboard navigation
- No seizure-inducing content
- Skip navigation links
- Sufficient time limits
Understandable
Information and UI operation must be understandable.
- Clear language
- Consistent navigation
- Error identification
- Form labels and instructions
Robust
Content must be robust enough for assistive technologies.
- Valid HTML
- ARIA labels
- Status messages
- Name, role, value
WCAG Conformance Levels
WCAGsafe checks Level A and AA — the legally relevant standard.
Minimum accessibility. Required for basic access.
30 success criteria
Standard compliance. The level referenced by the DOJ and courts for ADA compliance.
20 success criteria
Enhanced accessibility. Best practice but not legally required.
28 success criteria
Why WCAG Compliance Matters
Legal Risk Reduction
WCAG 2.1 AA is the standard referenced by courts and the DOJ for ADA compliance. Meeting it significantly reduces your lawsuit exposure.
1.3 Billion Users
Over 1 billion people worldwide have a disability. Accessible websites reach more customers and improve UX for everyone.
SEO Benefits
Many WCAG requirements — like alt text, semantic HTML, and fast load times — directly improve your Google rankings.
Check Your WCAG Compliance Free
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