Passphrase Generator — Long, Memorable, Strong

How to use

1. Choose how many words (3-6) and a separator.
2. Toggle capitalization and trailing digits.
3. Press Generate and copy the passphrase — entropy is shown live.

About this tool

Security guidance from NIST and the UK NCSC keeps saying the same thing: length beats complexity, and humans remember phrases far better than symbol soup. This generator rolls cryptographically random words from an embedded 256-word list using crypto.getRandomValues — the same diceware approach security professionals recommend — then lets you tune separator, capitalization and a digits suffix until the passphrase fits a site's rules. Every combination is computed on your device with Web Crypto; no password ever touches a network. Your file never leaves this page — processing runs entirely in your browser; nothing is uploaded and the data is dropped from memory when you close the tab. Use it for your password manager's master password, disk encryption, or any login you actually want to remember.

FAQ

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