UminShield · Local-only password tool

How secure is
your password?

Generate strong credentials or test the one you already use. Everything runs locally in your browser — no network calls, no logging, no storage.

Click "Generate" to create a password

Options

16
Uppercase
Lowercase
Numbers
Symbols

How it works

  • Passwords are never stored or transmitted.
  • All checking happens locally in your browser.
  • You can test offline — no internet required.
  • We check against common password patterns.
  • We analyse keyboard patterns and sequences.
  • We detect common substitutions (e.g. a → @).

Strong password tips

  • Use at least 14 characters.
  • Mix uppercase and lowercase letters.
  • Include numbers and special characters.
  • Avoid personal information.
  • Don't use dictionary words alone.
  • Use unique passwords for each account.
  • Consider a password manager.
  • Enable two-factor authentication.

Common password mistakes to avoid.

/ 01

Easy passwords

Using simple, predictable passwords makes accounts vulnerable to dictionary & brute-force attacks.

/ 02

Reusing passwords

Using the same password across accounts means one breach compromises all of them.

/ 03

Never changing

Keeping the same password for years increases the chance of eventual compromise.

/ 04

Sharing insecurely

Sending passwords through email, SMS or chat leaves a permanent unencrypted record.

/ 05

Writing them down

Storing passwords in spreadsheets, sticky notes or phone notes is unsafe and easy to lose.

/ 06

Skipping MFA

Not enabling Multi-Factor Authentication is the single biggest avoidable risk.

/ 07

Letting browsers save

Relying on browser password storage without a master password or device encryption.

/ 08

Predictable patterns

Keyboard walks (qwerty, 12345), birthdays, and dictionary words are tried first by attackers.

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