Put a password in this box:

It would take 0 seconds to crack your password

This password was not compromised in any database breach!!

This page is adopted from the Open Source project passwordsecurity.info on Github

The password is not transferred over the network, everything is handled inside the browser.

The password is encrypted to SHA1, of which the first 5 characters are used to fetch the list of SHA1 keys of cracked passwords from local copy of the Have I Been Pwned? API.

Then the remaining 35 SHA1-characters are checked, if they match a cracked SHA1-encryption of a broken password.

Thanks goes to PasswordSecurity.info created by Félix Giffard for implementing this in Javascript.