Secure Passphrase Generator
Create passwords that are impossible for machines to crack, but easy for you to remember. Uses cryptographic randomness — never Math.random().
crypto.getRandomValues(). Nothing is logged or transmitted.
How This Keeps You Safe
Traditional complex passwords like P@ssw0rd1! are hard for humans but easy for cracking software using rule-based attacks.
A 4-word passphrase from a 1,000-word list has over 39 bits of entropy — equivalent to a random 7-character password, but vastly more memorable. Add more words for bank-grade security.
Entropy Guide
- 3 words ~30 bits Weak — avoid
- 4 words ~40 bits Good for most accounts
- 5 words ~50 bits Strong — recommended
- 6 words ~60 bits Very strong — banking/email
Why Passphrases Win
For humans: "correct-horse-battery-staple" is instantly memorable.
For computers: With 1,000 words and 4 positions, there are 1,000,000,000,000 possible combinations — taking billions of years to brute-force.
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