Generate cryptographically-random passwords, then measure any password's real entropy, estimated crack time, and the weak patterns attackers exploit. 100% local — nothing you type leaves the page.
Generator
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Length20
Strength analyzer
Awaiting input
Entropy
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Character pool
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Crack — online (1k/s)
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Crack — offline GPU
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Entropy assumes a random password over the detected character pool; the crack estimates use 1,000 guesses/sec (throttled online attack) and 100 billion/sec (a modern offline GPU rig against fast hashes). Real-world dictionary/pattern attacks crack human-chosen passwords far faster — which is what the warnings flag.