Length is the biggest factor — aim for at least 16 characters mixing upper- and lower-case letters, numbers, and symbols. Avoid dictionary words and personal information.
Are these passwords safe to use?
Yes. Passwords are generated entirely in your browser using your device’s secure random generator, and are never sent to a server or stored.
How long should my password be?
12 characters is a reasonable minimum; 16 or more is strongly recommended. Each extra character increases cracking time exponentially.
Should I use a passphrase instead?
Passphrases (several random words) are easy to remember and very strong. For accounts you don’t memorize, a long random password in a password manager is best.