Password generator · Guide
Password Length and Entropy
Entropy is the precise way to talk about password strength. Understanding it explains why length wins.
Entropy in plain terms
Entropy measures unpredictability in bits — roughly, how many guesses an attacker needs. Each added random character multiplies the possibilities, so length raises entropy fast.
Length beats tricks
Substituting @ for a in a dictionary word adds little entropy because attackers know the trick. A longer truly random string adds far more, which is why generators favour length.
Frequently asked questions
Can I use this for production work?
Yes, for inspection, formatting and quick generation. Still review the output before committing it to production code or configuration.
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