Firefox Profiler — Web app for Firefox performance analysis
Capture a performance profile. Analyze it. Share it. Make the web faster.
Recording performance profiles requires Firefox. However, existing profiles can be viewed in any modern browser.
You can also profile Firefox for Android. For more information, please consult this documentation: Profiling Firefox for Android directly on device.
Load existing profiles
You can drag and drop a profile file here to load it, or:
The Firefox Profiler can also import profiles from other profilers, such as Linux perf, Android SimplePerf, the Chrome performance panel, Android Studio, or any file using the dhat format or Google’s Trace Event Format. Learn how to write your own importer.
You can also compare recordings. Open the comparing interface.
Your recent uploaded recordings
No profile has been uploaded yet!