Profile directory

From GreaseSpot

The profile directory refers to your Firefox User Profile. It is located at a different path, depending on your platform:

Microsoft Windows 

%APPDATA%\Mozilla\Firefox\Profiles\Random Value.default
or
%USERPROFILE%\AppData\Local\Mozilla\Firefox\Profiles\Random Value.default
Note: you may need to enable displaying hidden files to see Application Data, or type it into the address bar.

Apple OS X 

~/Library/Application Support/Firefox/Profiles/random value.profile name
Note: random value.profile name is sometimes "default.dcc"

Linux 

~/.mozilla/firefox/random value.profile name

Above, random value will usually be something like "928za141", and profile name is usually "default" if you haven't created a new profile with another name.

[edit] about:support

As of Firefox 3.6 and above, the about:support page provides a handy link. Click Help, Troubleshooting information... Find the Profile Directory Open Containing Folder button and click it.

[edit] See Also

• Firefox Help: How To Manage Profiles
• Profile folder - Using the Help Menu