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Password strength

Check strength

Type a password. Scoring runs locally with zxcvbn.

Runs in your browser. Inputs stay on this device — nothing is uploaded to BrowserSpaces for processing.

Score 0–4

Quick strength band.

Crack times

Offline / online estimates.

Suggestions

Actionable feedback.

Use the tool

Type a password to estimate strength locally.

How it works

How strength is estimated

zxcvbn models common patterns and dictionaries in-browser. It never phones home with your input.

Three steps

  1. 1

    Enter password

    Stays in this field.

  2. 2

    Read score

    0 weak → 4 strong.

  3. 3

    Improve

    Follow suggestions if any.