Password Generator
Strength: —
Generate strong, cryptographically secure random passwords | 100% Private
Uses crypto.getRandomValues(), not Math.random(), for true unpredictable randomness.
Choose length from 4 to 64 characters and toggle uppercase, lowercase, numbers, and symbols.
Instant feedback on how strong your generated password is, from Weak to Very Strong.
Copy your password to the clipboard instantly with a single click.
If you uncheck every character type, a clear error appears instead of a broken password.
Passwords are generated and displayed only in your browser — nothing is ever sent anywhere.
Weak, reused passwords are one of the leading causes of account compromise. A strong password should be long, random, and unpredictable — exactly what this generator produces using your browser's cryptographically secure random number generator.
JavaScript's Math.random() is a fast, general-purpose random number generator that is not designed to be unpredictable — its internal state can, in principle, be inferred from enough output. That makes it unsuitable for generating secrets like passwords. crypto.getRandomValues() instead draws from the operating system's cryptographically secure random source, the same kind of randomness used to generate encryption keys.
Length matters more than complexity tricks — a 20-character random password is far stronger than an 8-character one with substituted symbols. Combining uppercase, lowercase, numbers, and symbols increases the pool of possible characters at each position, which increases the total number of guesses an attacker would need to try.
Yes. It uses the browser's built-in crypto.getRandomValues() API, a cryptographically secure pseudorandom number generator (CSPRNG), instead of Math.random(), which is not suitable for generating secrets. Passwords are generated entirely on your device.
No. Everything happens locally in your browser using JavaScript. Nothing is transmitted, logged, or stored anywhere — not even in this browser tab once you navigate away.
The tool will show a clear error message asking you to select at least one character type, and it will not attempt to generate an empty or broken password.
Strength is estimated from password length combined with the diversity of character sets used (uppercase, lowercase, numbers, symbols). Longer passwords using more character types score higher, from Weak up to Very Strong.
For most accounts, 16 characters or more with all four character types enabled is recommended. Use a password manager so you never need to remember long random passwords yourself.