Firefox
Firefox
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Firefox stores your personal data, such as bookmarks, passwords, and extensions, in a profile folder on your computer, in a location separate from the Firefox program. This article explains how to back up your profile, restore it, or move your profile to a new location or computer.
Note: The Refresh Firefox feature creates an Old Firefox Data folder on your desktop, which contains a backup of your old profile folder and its contents. If you recently refreshed Firefox and still have this folder, you already have a complete profile backup.
Table of Contents
Locate your profile folder
- Click the menu button , click and select .From the The Troubleshooting Information tab will open. menu, select .
- Under the Application Basics section next to Profile FolderProfile Directory, click . A window will open that contains your profile folder.Your profile folder will open.Your profile folder will open.
Note: If you are unable to open or use Firefox, follow the instructions in Finding your profile without opening Firefox.
Backing up your profile
To back up your profile, first close Firefox if it is open and then copy the profile folder to another location.
- Locate your profile folder, as explained above.
- Close Firefox (if open): Click the Firefox menu and select .Click the Firefox menu at the top of the screen and select .Click the Firefox menu and select .
- Go to one level above your profile's folder (in other words, to %APPDATA%\Mozilla\Firefox\Profiles\~/Library/Application Support/Firefox/Profiles/~/.mozilla/firefox/).
- Right-clickHold down the Control key while you click on your profile folder (for example, on the xxxxxxxx.default folder) and select .
- Right-clickHold down the Control key while you click the backup location (such as a USB-stick) and select .
Restoring a profile backup
- Click the Firefox menu and select .Click the Firefox menu at the top of the screen and select .Click the Firefox menu and select .
- If your existing profile folder and profile backup folder have the same name, simply replace the existing profile folder with the profile backup, then start Firefox. Important: The profile folder names must match exactly for this to work, including the random string of 8 characters. If the names do not match or if you are restoring a backup to a different location, follow the steps below.
Restoring to a different location
If the profile folder names do not match or if you want to move or restore a profile to a different location, do the following:
- Completely close Firefox: Click the Firefox menu and select .Click the Firefox menu at the top of the screen and select .Click the Firefox menu and select .
- Use the Firefox Profile Manager to create a new profile in your desired location, then exit the Profile Manager. Note: If you just installed Firefox on a new computer, you can use the default profile that is automatically created when you first run Firefox, instead of creating a new profile.
- Locate the backed-up profile folder on your hard drive or backup medium (such as your USB stick).
- Open the profile folder backup (for example, the xxxxxxxx.default backup).
- Copy the entire contents of the profile folder backup, such as the handlers.json file, prefs.js file, bookmarkbackups folder, etc.
- Locate and open the new profile folder as explained above and then close Firefox (if open).
- Paste the contents of the backed up profile folder into the new profile folder, overwriting existing files of the same name.
- Start Firefox.
Related articles
- To back up and transfer your data using Firefox Sync when you install Firefox on a new device, see Back up and transfer your Firefox data to a new device.
- To restore or move selected information instead of the entire profile, see Recovering important data from an old profile.
- To back up, restore or move just your bookmarks (not other data), see Restore bookmarks from backup or move them to another computer.