Security

Password Strength Checker

Check how crackable a password really is, based on known patterns and dictionaries, not just character-type rules.

Runs entirely in your browser, nothing is uploaded

Password

Checked entirely in your browser; nothing you type here is sent anywhere. Scoring is based on realistic crackability (known password patterns, dictionary words, dates, keyboard walks), not simple character-type rules.

How it works

1
You type a candidate password
The field is masked and the value stays in the page. Nothing is sent anywhere.
2
It is scored on real crackability
Scoring uses zxcvbn, which matches against dictionaries, names, dates, keyboard walks and repeats rather than counting character types.
3
You get an estimate and reasons
The result includes a rough offline cracking time plus the specific patterns that weakened it.

Practical guidance

This is why a long ordinary phrase can score better than a short password full of substitutions. Attackers know the substitutions too.
The cracking estimate is a model, not a promise. Treat it as a rough order of magnitude.

Password Strength Checker

How it works

You type a candidate password

It is scored on real crackability

You get an estimate and reasons

Practical guidance

People usually pair this with

Password Generator

Bcrypt Hash & Verify

Password Strength Checker

How it works

You type a candidate password

It is scored on real crackability

You get an estimate and reasons

Practical guidance

People usually pair this with

Password Generator

Bcrypt Hash & Verify