100% Client-Side Processing

Password Strength Checker

Test your password security instantly. All checks run locally—your password never leaves your device.

Enter Password

Requirements

At least 8 characters

Contains uppercase letter

Contains lowercase letter

Contains number

Contains special character (!@#$%^&*)

What Makes a Strong Password?

A strong password should be at least 12 characters long and include a mix of uppercase letters, lowercase letters, numbers, and special characters.

Avoid: Common words, personal information, sequential patterns (123456, abcdef), and repeated characters.

Best practice: Use a password manager to generate and store unique passwords for each account.

Privacy First

This password checker runs entirely in your browser. Your password is never sent to any server or stored anywhere. All analysis happens locally on your device using JavaScript.