Firefox saves your personal information such as bookmarks, passwords, and user preferences in a set of files called your profile, which is stored in a separate location from the Firefox program files.
Any changes you make while using Firefox are stored in files so that they can be used the next time you run Firefox. These changes can be obvious, like your home page, or changes you've made to the toolbar, but also include things like your history, what sites you've visited, and text you've entered into forms like search fields. They're all stored in the same location, called a profile folder.
These files are kept separately from the program files that Firefox uses to run, which don't change. This means that you can uninstall Firefox without losing your settings, and that if something goes wrong with an update your information will still be there. It also means you don't have to reinstall Firefox in order to clear your information, or troubleshoot a problem.
Each profile is stored on your hard drive in a profile folder. The following table identifies the default locations of Firefox profiles on various operating systems.
Operating System | Profile Folder Path
|
Windows Vista/XP/2000 | %APPDATA%\Mozilla\Firefox\Profiles\xxxxxxxx.default\ |
Windows 98/Me | C:\WINDOWS\Application Data\Mozilla\Firefox\Profiles\xxxxxxxx.default\ |
Each profile is stored on your hard drive in a profile folder. The default location of the Firefox profile is ~/Library/Application Support/Firefox/Profiles/xxxxxxxx.default/.
Each profile is stored on your hard drive in a profile folder. The default location of the Firefox profile is ~/.mozilla/firefox/xxxxxxxx.default/.
More advanced users may wish to make certain changes to their profile, or you might be advised to do so to fix a problem you're having with Firefox.
Managing profiles explains how to do things like create a new profile and delete an old one.
Backing up your information explains how to back up your profile, how to restore a profile backup, and how to move your profile information to a different location on your hard drive or to another computer.
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