Secure & Open Source
Passwords that
hold up.
actually hold up.
Stop using passwords hackers can guess in milliseconds. PassLab generates high-entropy, cryptographically random credentials 100% locally in your browser.
Open source
No telemetry
Works offline
Generator
client-side
StrengthVery weak · 0 bits
Time to crack
instant
at 10 billion
guesses / second
guesses / second
20
616324864
Generated with crypto.getRandomValues() — never leaves your tab.
100% client-side/No account required/No data ever transmitted
Passwords are the last thing
people think about.
Until they get hacked.
01
Generators with no taste
Most password tools spit out a random blob with no context. They give you a string but never tell you why it's strong — or that it isn't.
02
No feedback, no learning
A meter that goes green isn't feedback. PassLab shows entropy in bits, time to crack, and exactly which choices moved the needle.
03
Unmemorable, so reused
If you can't remember it, you reuse it. We support passphrases, word-to-password transforms, and clean exports — so good passwords actually stick.
Six tools.
One quiet tab.
Each feature does one thing well, runs locally, and explains itself. No upsell, no account walls.
Strength Checker
How strong is yours?
Paste a password — we check it locally. Never sent anywhere.
Verdict
—
Entropy
—
Crack time
—