Allows users to import/export saved passwords to/from another profile or Firefox install
Compatibility 
Works with: Firefox 3.6+
Background
It is possible to import and export saved passwords from one Firefox profile or install to another. This is handy for users running Firefox on multiple computer or who have had to create a fresh profile when upgrading (or downgrading) Firefox.
The Tweak
Install the Password Exporter extension on all copies of Firefox. Once installed go to Tools > Options > Security Tab and then click the Import/Export Passwords button.
Click either Export Passwords or Import Passwords. Warning: Selecting the Obfuscate Usernames/Passwords option will make the raw export file unreadable to humans, however the passwords can still be viewed once the file is imported into Firefox. When clicking export a dialog box will pop-up asking you to select a location to save the export file. Be sure to make note of this location as you will need it when you go to import the passwords. Note: If a password entry already exists for a given website when importing, that entry will not be imported.
Notes
Updated: November 15, 2025
