Share telemetry data with Mozilla to help improve Firefox

Revision Information
  • Revision id: 21498
  • Created:
  • Creator: Michael Verdi
  • Comment: style updates, added a bit about the info-bar, added screenshots for windows
  • Reviewed: Yes
  • Reviewed:
  • Reviewed by: Verdi
  • Is approved? Yes
  • Is current revision? No
  • Ready for localization: No
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Revision Content

It's helpful for Mozilla's engineers to be able to measure how Firefox behaves in the real world. The Telemetry feature provides this capability by sending performance info to us. As you use Firefox, Telemetry measures and collects non-personal information, such as memory consumption, responsiveness timing and feature usage. It then sends this information to Mozilla on a daily basis and we use it to make Firefox better for you.

Telemetry is an opt-in feature. This means that you specifically need to tell Firefox to collect and send this information to us. For more about what kind of information is collected and how it's used, see our privacy policy.

How do I opt-in or opt-out of sending performance data?

When you install or update Firefox you may be presented with a message that lets you turn the Telemetry feature on.

Telemetry info bar - win

You can also turn this on and off at any time with these steps:

  1. Click the menu button New Fx Menu Fx57Menu and choose Options.Preferences.
  2. Select the Advanced panel.
  3. Select the General tab.
  4. Check or uncheck the box next to Submit performance data
    Telemetry - win
  5. Close the about:preferences page. Any changes you've made will automatically be saved.