Password Generator

No. Passwords are generated entirely in your browser with crypto.getRandomValues. They are never uploaded, logged or saved to localStorage, and they disappear when you close the page.

Use at least 12–16 characters mixing all four character types for everyday accounts, and 16+ for critical ones such as email, banking or your password manager’s master password. Length beats complexity: each extra character multiplies the brute-force effort by the size of the character pool.

Entropy measures how unpredictable a password is, calculated as length × log2(pool size). A 16-character password using all 94 characters has about 105 bits. This tool rates below 40 bits as weak, below 60 as fair, below 80 as strong and 80+ as very strong.

Uppercase I, lowercase l, the digit 1, the pipe |, uppercase O, zero and lowercase o look alike in many fonts, which causes mistakes when copying by hand or reading aloud. Excluding them shrinks the pool slightly, so add a character or two to make up the entropy.