Password checker

Check if a password is in known security breaches

This tool is all about making sure your password isn't leaked, and we want to keep it that way. Your password is never sent to our servers. Here's how:

When you type in a password in the input field, we use the SHA-1 algorithm to hash your password. We then send only the first 5 (out of 40) characters of said hash to our API, which returns a list potential hashes. That list is then compaired against your full password hash. If we get a hit, we know your password has been leaked at some point.

You can verify this by looking at the request send to in your browser console.

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