Code Coverage

View CSS Code coverage per file, prettified and marked which lines are covered.

Learn how to record CSS coverage in your browser, or let your Playwright tests do it! After that, export the data as JSON and select or drop the file here. Or .

This CSS Coverage viewer makes a visualization of used and unused pieces of your CSS. It uses the JSON exported by DevTools (in Playwright, Edge, Puppeteer or Chrome) to make a single visualization.

  • Combine output multiple Coverage JSON files into a single overview
  • Mark each line as covered or not covered
  • Prettify CSS for easy inspection