Firefox can ask to save a login after you sign in
When Firefox detects a login that is not already stored, it can offer to save the username and password. The next time you visit the site, Firefox can suggest or fill the saved login.
If you do not want Firefox to store passwords, open Settings → Privacy & Security and review the password-saving options.
Open the Firefox Password Manager
On desktop Firefox, open the menu and choose Passwords. Firefox opens its password-management page, commonly available directly at:
about:logins
You can search for a saved website, review the stored username and reveal the password when your device or browser security allows it.
Edit or delete a stored login
Open the password manager, select the relevant login and use the available controls to edit or remove it. This is useful when a password changes or when Firefox has saved an outdated username.
If synchronization is enabled, changing or deleting a saved login can also affect the synchronized copy on your other Firefox devices.
Use a Primary Password on a computer other people can access
Firefox supports a Primary Password to add another layer of protection before stored logins can be used or viewed. Mozilla previously called this feature a “Master Password.”
Sync passwords with a Mozilla account
Firefox Sync can make saved logins available on your other signed-in Firefox installations when password synchronization is enabled. Mozilla states that Firefox Sync data is end-to-end encrypted.
On a device you no longer control, remove access to the account/device promptly and change important passwords if compromise is possible.
Be careful when exporting passwords to CSV
Firefox can export saved login data when you need to migrate or make a temporary backup. The important security issue is that the exported CSV contains passwords in readable form.
- Open Firefox Password Manager.
- Use the password-manager menu to export login data.
- Authenticate when Firefox asks you to confirm access.
- Store the CSV only as long as required.
- Delete the unencrypted export securely after the transfer is complete.
Why the old Firefox screenshots were removed
The original Plus2Net page contained screenshots from an older Firefox interface. They are not included in the modernized article because the current Password Manager workflow is substantially different, and outdated screenshots would make the instructions harder rather than easier to follow.
Treat saved passwords as sensitive data
Firefox Password Manager is convenient for storing and synchronizing logins, but convenience should be paired with device security, a Primary Password where appropriate, and careful handling of any exported password file.