Step 1:
Open Firefox and on the top right of the window click on the options button, then choose “Preferences”. (You can click the images at the right to enlarge them).
Step 3:
In the window you can see a list of all saved passwords in Firefox. Choose the account for which you wish to view the password and click on “Show Passwords”.
Step 4:
A window will pop-up asking you to confirm this command, click on yes. Now you can see the passwords.
Step 6:
The account will be removed, and as you can see in this example, there are no other passwords saved on the browser.