Free Tool
Free Website Accessibility Checker
OverlayQA's free accessibility checker scans any website for WCAG 2.1 violations using axe-core automated testing and AI visual analysis. Enter a URL to get an accessibility score, severity breakdown, and top findings in under 60 seconds. No account required. The AI layer catches visual issues that automated scanners alone miss.
How It Works
Enter your URL below. The checker loads your page in a real browser, runs axe-core against 300+ WCAG 2.1 rules, then applies AI visual analysis to catch issues that automated rule checks miss. You get a score from 0-100, a severity breakdown (critical, high, medium, low), and your top findings.
What This Checker Catches That Others Miss
- AI visual analysis — Detects contrast issues in images, text over complex backgrounds, and interactive element sizing problems that rule-based scanners cannot evaluate.
- Design token audit — Identifies inconsistent CSS values that indicate accessibility-impacting style drift across components.
- Comprehensive axe-core scan — Tests against 300+ rules covering WCAG 2.1 Level A and AA success criteria.
The Numbers
95.9% of the top one million websites have detectable WCAG failures, with an average of 56.1 errors per page (WebAIM Million, 2025). ADA web accessibility lawsuits increased 27% in 2025 to over 3,100 federal filings. Automated scanners catch 30-40% of WCAG issues. AI visual analysis closes the gap on the visual issues that automated rules cannot evaluate.