No. They exist only in your browser tab — the site stores nothing, logs nothing and transmits nothing. The recent list disappears when you close the tab.

It is the mathematical measure of how hard a password is to guess: every extra bit doubles the number of guesses an attacker needs. Roughly: under 45 bits is weak, 45–70 fair, 70–100 strong, and 100+ excellent.

If you need to read a password aloud or type it from a printout, characters like lowercase l, digit 1, uppercase I, uppercase O and digit 0 are easily confused. Excluding them slightly reduces the pool but removes typing mistakes.

For important accounts, 16–20 characters with all four character types gives you 100+ bits of entropy — effectively uncrackable by brute force. Use the slider and the strength meter to decide.

No — use a password manager and keep one unique password per site. A generator makes strong passwords; a manager makes them practical.