About this tool
Is your password strong? Attackers do not try random characters first: they try leaked passwords, dictionary words, keyboard runs like qwerty, repeated characters and years, and only then everything else. This checker looks for those same patterns - including swaps like @ for a and 0 for o - estimates how many guesses an attacker would need and shows the time to crack it online, with a stolen database protected by a strong hash and with a fast hash on a graphics card. It runs entirely in your browser: the password is not sent, saved or put in the link.
How to use it
- 1 Type or paste the password.
- 2 Look at the strength meter and the time to crack it.
- 3 Read the tips to make it stronger.
- 4 Generate a new random one if it is weak.
Frequently asked questions
Is it safe to type my real password here?
The check runs only in your browser: nothing is sent to a server, saved or added to the address. Still, if you prefer, test a password with the same pattern instead of the real one.
What makes a password strong?
Length and unpredictability. Twelve or more characters with no words, names, dates or keyboard runs - or four or five random words - resist far longer than a short word with a symbol at the end.
Why does 'P@ssw0rd' score so low?
Because attackers apply the same swaps (@ for a, 0 for o) to their word lists. A common password with symbols is still a common password.
Does it check if my password was leaked?
Not against leak databases - that would need the internet. It does know the most leaked passwords and flags them as very weak.
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