CSPRNG Web Crypto Engine

Ultra-Secure Random Password & Passphrase Generator

Create uncrackable passwords and memorable Diceware passphrases with entropy meters and zero network transmission. Powered by your browser's hardware random number generator.

Strength Level

Invulnerable

Information Entropy116 bits of randomness

Brute-Force Crack EstimateTrillions of centuries

Password Length18 characters

616 (Recommended)3264

Uppercase (A-Z)Lowercase (a-z)Numbers (0-9)Symbols (!@#$%)

Exclude Ambiguous Characters (O, 0, l, 1, I, |)

Bulk Password Generator

Frequently Asked Questions

Are the passwords generated here private?

Yes, 100%. Passwords are created using your browser's native crypto.getRandomValues() API. There is zero telemetry, zero server storage, and no network transmission whatsoever.

What is a Diceware passphrase?

A passphrase combines multiple random English words (such as Quantum-Falcon-Summit-94). They are easy for humans to remember while providing massive cryptographic entropy that is nearly impossible for computers to brute-force.