Is it safe to generate passwords in an online tool?

Yes, on this tool it is 100% safe. This password generator operates entirely within your browser via the native Web Crypto API (window.crypto.getRandomValues). No passwords are ever transmitted to any backend server, logged in databases, or cached.

What makes a password cryptographically secure?

Cryptographic security requires high entropy (at least 60-80 bits for general use, 100+ bits for master passwords) generated via a true Cryptographically Secure Pseudo-Random Number Generator (CSPRNG) rather than predictable math random functions.

Dev Tools · Security

Password Generator

Generate strong, cryptographically secure random passwords, readable passphrases, and PINs. 100% client-side.

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Strength: - (0 bits) Crack time: -

Password Settings

Password Length 16

Uppercase (A-Z) Lowercase (a-z) Numbers (0-9) Symbols (!@#$%^&*) Exclude Similar (i, l, 1, L, o, 0, O) Exclude Ambiguous ({ } [ ] ( ) / \ ' " ` ~)

Bulk Generator Multi

Quantity to generate 5

Understanding Password Security & Entropy

Password strength is measured in bits of entropy, representing how many random guesses an attacker would need to brute-force your secret. A 16-character password with mixed cases, numbers, and symbols provides over 95 bits of entropy, making it virtually impossible to crack with modern supercomputers.

Why use Diceware-style passphrases?

Passphrases like correct-horse-battery-staple combine high cryptographic entropy with human memorability. They are ideal for master passwords, laptop unlocks, and disk encryption keys.

How long does it take to crack a 16-character password?

At 100 billion guesses per second (a modern GPU cluster), cracking a 16-character random password with 95+ bits of entropy would take over 100,000 years.