Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

Can I use about:config to edit settings that appear in about:preferences?

  • 2 uphendule
  • 0 zinale nkinga
  • 8 views
  • Igcine ukuphendulwa ngu cor-el

gsrgtrdg4565653
gsrgtrdg4565653
more options

I need to make a new profile for testing purposes. I have the list of modified preferences in the about:config page. Couldn't I just replace each modified preference one by one with the values from the old profile to replicate all of the settings (even those that appear in the settings menu)?

I need to make a new profile for testing purposes. I have the list of modified preferences in the about:config page. Couldn't I just replace each modified preference one by one with the values from the old profile to replicate all of the settings (even those that appear in the settings menu)?

All Replies (2)

Terry
Terry
more options

I don't know. Try it. You can check Settings in the new profile to see whether it matches.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Note that not all bold (modified) preferences on the about:config page are coming from the Settings page, so be cautious with transferring pref settings to the new profile as a lot of them are used internally by Firefox, especially prefs that have a Unix time string as their value.

WARNING: modifying prefs directly via the about:config page can sometimes break Firefox or cause strange behavior, and there is no guarantee that this will keep working in future Firefox releases, so be cautious with modifying prefs if you aren't sure you understand their purpose. You should only do this if you know what you're doing. You can possibly search the source code to check what a pref is about.