Firefox profiles: Quickly replicate your settings to any machine

Updated: 2026-10 Published: 2023-07

Carry a configured Firefox profile, with its settings, add-ons and bookmarks, to another machine by copying the profile folder.

A Firefox profile stores your settings, add-ons, bookmarks and other browser data. If you regularly work on different machines, you can configure a profile once and copy it to each machine without signing in to Firefox Sync.

The steps below were originally documented using Firefox on Windows 10 in VirtualBox, running on openSUSE Tumbleweed. The screenshots show that setup.

Create the profile

  1. Open Firefox’s Profile Manager with firefox -P in a Linux terminal or the Windows Run dialog.
Windows Run dialog with the command firefox -P entered
  1. Create a new profile (the example names it “Perfect”) and start Firefox with it.
Firefox Profile Manager showing the new profile named Perfect

  1. Configure the profile as you like, including its theme, privacy settings, proxy settings and add-ons.

  2. In that profile, open a new tab and go to about:support. Find “Profile Folder”, select “Open Folder”, and leave that folder open.

Firefox Troubleshooting Information page with the Profile Folder row highlighted
  1. Close Firefox, then copy the profile folder to a USB drive or another storage location.

Copy the profile to another machine

  1. Open Firefox on the other machine and go to about:support.
  2. Select “Open Folder” beside “Profile Folder”, then close Firefox.
  3. Copy the contents of the saved profile folder into the folder you just opened.
  4. Start Firefox and use the copied profile.

Originally discussed on Lemmy.

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