If they access you device your side may be compromised (and a keylogger or cache inspector may defeat most password managers, offline or not). And even if they

If they access you device your side may be compromised (and a keylogger or cache inspector may defeat most password managers, offline or not). And even if they get it because your online backup of it is leaky, it is encrypted using AES256 with a passphrase of whatever length you want to use, correct horse battery staple let you to generate complex enough and long, but memorable, passphrases. If your passwords are important enough to try to dedicate a lot of computer resources to break it, you can put a passphrase that can stand brute force attacks for centuries.