Secure Password Generator
Security
Generate cryptographically secure passwords and memorable passphrases with real-time entropy analysis.
Runs entirely on your machine. Zero bytes uploaded to the cloud.
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About Secure Password Generator
Powered by Web Crypto API. Customize character sets, avoid ambiguous letters, generate Diceware-style passphrases, and view brute-force crack time estimates.
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Frequently Asked Questions about Secure Password Generator
Are the generated passwords truly random?▼
Yes. We utilize window.crypto.getRandomValues(), the browser's cryptographically secure pseudorandom number generator (CSPRNG), which gathers hardware entropy.
What is the difference between a password and a passphrase?▼
Random passwords mix characters (e.g., 9#mK$2vL), making them ideal for password managers. Passphrases combine multiple dictionary words (e.g., harbor-crystal-ember-tiger), making them much easier for humans to remember while retaining massive entropy.