Your Lighthouse Accessibility Score Is 100. Your Site Still Is Not Compliant.
A Lighthouse accessibility score of 100 only means you passed the automated checks, which catch 30-57% of issues. What it cannot see, and what to test next.
Technical Quality
Why valid markup and accessibility are one problem: what a Lighthouse accessibility score of 100 still misses, how AI-generated code adds accessibility debt, and how duplicate IDs, unclosed tags and misplaced ARIA break the experience for screen reader users.
AI-Generated Code and the Accessibility Debt Nobody Is Auditing
Web accessibility got worse in 2026 for the first time in six years, and WebAIM points at AI-assisted coding. Why it happens and how to catch it early.
How Small Code Quality Issues Quietly Break Accessibility (2026 Guide)
Duplicate IDs, unclosed tags and misplaced ARIA: small bugs a browser hides and a screen reader exposes. Why valid markup and accessibility are one problem.