How to recover Firefox password from Time Machine backup

Here are steps to recover Firefox passwords from Time Machine backup on Mac.

1. Open Time Machine and navigate to the backup data from which you want to retrieve the Firefox passwords
2. Make sure hidden files and folders option is enabled on your Mac.
3. Navigate to Users -> <UserName> -> Library
4. Under Library navigate to Application Support followed Firefox folder.
5. Under Firefox navigate to Profiles and open the folder ending with default-release.
6. Copy key4.db and logins.json.
7. Copy the above two files to Profiles folder under Users/<UserName>/Library/Application Support/Firefox/…default-release/Profiles. Before copying make sure to take a backup of existing key4.db and logins.json files.

Now all your saved usernames and passwords for Firefox will be available on your Mac.