Password Generator

About

Password Generator produces cryptographically secure random passwords, from 4 to 128 characters, with toggles for each character class and an option to exclude visually ambiguous characters like 0/O and l/1, or memorable multi-word passphrases built from a 512-word EFF-style list. Every result shows its entropy in bits and a strength gauge, so you can see how strong a password actually is, not just trust that it is. Generation uses your browser's cryptographic random source; nothing is sent to a server.

Frequently asked

Are the passwords generated locally, or sent to a server?

Entirely locally, using the Web Crypto API's cryptographically secure random number generator — no password this tool generates ever leaves your browser.

What's the difference between password mode and passphrase mode?

Password mode produces random characters from your chosen character sets; passphrase mode strings together random words from a 512-word EFF-style list, which is easier to type and remember while still being high-entropy.

How strong is "strong" — does it show the actual entropy?

Yes, every generated password or passphrase shows its entropy in bits alongside a strength gauge, calculated from the actual character set and length, not a guess.