Compat Report

Compat Report

Shows a report of browser compatibility issues using data from MDN

Compat Report promo image
What is Compat Report?

'Compat Report' is a valuable Firefox add-on designed for web developers. Its primary function is to provide a detailed report on browser compatibility issues using insightful data from Mozilla Developer Network (MDN). This tool efficiently identifies potential cross-browser problems, allowing developers to address these issues promptly for a smoother user experience.

Stats date:
Users: 715 ▲ 7
Rating: 4.65 (26)
Version: 0.1.0 (Last updated: 2019-11-12)
Creation date: 2017-12-09
Weekly download count: 24
Firefox on Android: Yes
Manifest version: 2
  • <all_urls>
  • tabs
  • webNavigation
Size: 327.54K
Email: Click to see
Risk impact: High risk impact
Risk likelihood: Low risk likelihood

Other platforms

Not available on Chrome
Not available on Edge
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Useful for finding compatibility issues
  • provides clear information on each CSS property
  • helpful in determining what polyfills are needed for modern css/javascript
  • appreciated concept and idea
  • issues with lagging and freezing
  • it lacks a dark mode
  • when a stylesheet is turned off, it reloads the whole tab and not just the compatibility section
Most mentioned
  • helps in testing website compatibility across different browsers
  • room for improvements like filters and dark mode
View all user reviews
Risk impact

Compat Report is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Compat Report if you trust the publisher.

Risk likelihood

Compat Report has earned a fairly good reputation and likely can be trusted.

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