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Password Strength Checker

Check the strength of your password and get suggestions to make it safer.

Private by design. Your password stays in this browser.

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How strong is your password?

Enter a password to see which checks it passes.

Score: 0 / 5

A checklist estimates strength; it cannot guarantee security.

Saved Passwords

Your websites. Your passwords. One local vault.

Stored encrypted in this browser only, without account sync. Keep your master password safe: it cannot be recovered. Clearing browser data removes the vault. Other pages on this website share browser storage; use a dedicated password manager for critical accounts.

Choose a master password to create your local encrypted vault.

About this tool

Based on the original Python Password Strength Checker. This browser edition retains its length, digit and uppercase checks, and adds lowercase and symbol checks. It does not check leaked passwords or personal information. Use long, unique passwords and a password manager.

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Password Generator

Generate a secure, random password.

💡 Password Tips

  • Use at least 12 characters; longer is better.
  • Combine uppercase, lowercase, numbers and symbols.
  • Avoid common passwords and predictable patterns.
  • Don't use personal information such as your name or birthday.
  • Use a unique password for every account.
  • Consider using a password manager.

Stronger Passwords.
Safer You!