A strong password needs true randomness across a large enough character set, this generator produces passwords locally in your browser, never sending anything to a server, with full control over length and character types.

How to use this password generator

1. Choose a Password Length (8, 12, 16, 20, or a custom length up to 128 characters).
2. Select Character Types: uppercase, lowercase, numbers, and/or special characters.
3. Optionally exclude ambiguous characters (0, O, 1, l, I) or disallow repeated characters.
4. Choose how many passwords to generate at once (up to 500).
5. Tap Generate, then copy or export your results.

What this generator does

This tool generates cryptographically random passwords using your selected character types and length, with options to exclude visually ambiguous characters, avoid repeats, and guarantee at least one character from each selected type, all computed and stored locally in your browser only, never sent to any server.

Why password length matters more than complexity rules

A longer password with a simpler character set is often more resistant to brute-force attacks than a shorter password crammed with every possible symbol, since each additional character multiplies the total number of possible combinations an attacker would need to try. This is why security guidance has shifted toward emphasizing length as the primary lever, while still recommending a mix of character types for additional strength.

Why excluding ambiguous characters can help in practice

Characters like 0 (zero), O (capital O), 1 (one), l (lowercase L), and I (capital I) can be visually confused with each other in many fonts, excluding them trades a small amount of theoretical randomness for a password that’s easier to type correctly when read from a screen or written down, useful when a password needs to be manually transcribed rather than copy-pasted.

Frequently asked questions