Generate strong passwords instantly. Uses Web Crypto API. 100% client-side.
Weak passwords are the #1 cause of account breaches. This generator uses the Web Crypto API (crypto.getRandomValues) — the same cryptographic random number generator used by banks and security software.
Passphrases (random words joined together) are easier to remember and often stronger than short complex passwords. A 4-word passphrase has roughly 50+ bits of entropy.
It uses the Web Crypto API function crypto.getRandomValues(), which provides cryptographically secure random numbers. This is the same random number generator used by banks, VPNs, and security software. Unlike Math.random(), which is predictable, Web Crypto randomness cannot be guessed or reproduced.
Length is the single most important factor in password strength. Each additional character multiplies the number of possible combinations exponentially. A 12-character password with mixed characters has about 72 bits of entropy, while a 20-character password has about 120 bits — making it billions of times harder to crack.
Passphrases (random words joined together like "correct-horse-battery-staple") are easier to remember and often stronger than short complex passwords. A 4-word passphrase has about 50 bits of entropy, equivalent to a 10-character random password. For maximum security, use a 5-6 word passphrase.
Yes, when the generator uses Web Crypto API and runs client-side. This tool never sends your passwords to any server. The generated passwords exist only in your browser memory until you close the page. We recommend using a password manager to store generated passwords securely.