HTML Fix Generator

Fix, optimize, and diff your HTML

Automatic SEO, performance, and accessibility improvements — now with readable formatting and a few playful touches.

Source

Fetch live HTML or paste markup. Parsing runs in your browser; scripts are not executed.

Paste HTML instead

Page URL

Optimization categories

SEOPerformanceAccessibility

Enter a URL or paste HTML to generate an optimized version, pretty-printed panels, and a categorized fix list.