Managing your site's password is always a challenge. With the help of a dedicated password manager, you can help, but if you use Firefox on your computer and mobile devices, you can also use a feature called Firefox Lockbox.
The Firefox Lockbox app (iOS, Android) grabs the site logs "has been stored in Firefox and subscribes you to websites on an iOS or Android device.
Sounds great, but your passwords are protected, and If so, how? Firefox manufacturer Mozilla says it uses a variety of encryption methods to secure your saved passwords. The browser relies on a tamper-resistant block cipher technology called AES-256-GCM, and uses the onepw protocol to log in to Firefox accounts and get encryption keys. Firefox also uses PBKDF2 and HKDF with SHA-256 to create the encryption key from your Firefox account username and password.
How to configure and use Firefox Lockbox.