Guides/Check password strength safely

How to check password strength safely

A strength meter can catch short or patterned passwords — but only if the check never leaves your device. Prefer client-side tools that do not upload what you type.

Why “local only” matters

• Anything you paste into a remote checker could be logged, leaked, or mishandled.
• Your real passwords for email, banking, or work should not be tested on random websites.
• Use a draft passphrase or a password you are about to create — then store it in a password manager.

What good meters look at

• Length — usually the strongest signal against guessing.
• Character classes — lower, upper, digits, symbols (when a site requires them).
• Common patterns — dictionary words, 1234, keyboard rows, repeated characters.

Worked examples

1. password1 — common + short → treat as unusable.
2. BlueHorseBattery! — longer passphrase style → much better on length.
3. Random 16-character manager secret → typically scores “strong” on simple meters.
4. Same password reused on three sites → meter may look fine; reuse is still a serious risk.

Common mistakes

• Trusting a green meter as proof against phishing or database leaks.
• Pasting your primary inbox password into an unknown online checker.
• Meeting complexity rules with a short password like P@ss1.

Check in your browser

Use our freePassword Strength Meter— length, classes, and weak-pattern hints with an explicit no-upload privacy notice. Pair with thestrong password checklist.