Import and Export Firefox Passwords

The Password Exporter Add-on allows you to export and import your saved passwords. It enables you to export all your passwords that are stored in Firefox, and save them to a XML or CSV file. For added security, you can choose to encrypt the file. The program also allows you to import the passwords from a file, making it easy to transfer them between computers.

Once installed the add-on, restart Firefox and you can access and run Password Exporter at the following location:
Firefox 1.5 and Thunderbird : Tools -> Options -> Privacy pane -> Passwords tab -> View Saved Passwords button -> Import/Export Passwords tab
Firefox 2.0 or higher, Songbird and Flock: Tools -> Options -> Privacy (or Security) pane -> Import/Export Password button

Check more about top Firefox extensions For Security and Privacy

Download – The Password Exporter Add-on