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How to remove setting from deleted extensions?

  • 1 reply
  • 1 has this problem
  • Last reply by ARMAN KHAN

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I used to have an extension. But after removing it I still see its setting in about:config. I don't want to clutter my Firefox's profile. Look at the screenshot.

1. Is it safe to remove all these setting manually? 2. How can I confirm that all the unnecessary data is removed? (including sqlite databases, etc...) 3. Isn't it a responsibility of an extension's developer to remove all the settings when a user removes it? 4. If I install hundreds of extensions and then I remove them, will they remain in my profile after deleting?

Attached screenshots

All Replies (1)

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hello Jeremy........

follow the steps

Disabling and removing extensions

  • Click the menu button , click. Add-ons and select Extensions.
  • Scroll through the list of extensions.
  • Click. the blue toggle for the extension you wish to disable.

fore more information:

thank you!



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