Password Strength Checker

How it works

The password strength checker analyzes your password and provides feedback using the following process:

  • As you type, your password is evaluated in real-time using the zxcvbn algorithm, a widely used open-source password strength estimator.
  • The algorithm checks for common patterns, dictionary words, names, and repeated or sequential characters to identify weak passwords.
  • It calculates a strength score from 0 (very weak) to 4 (strong), and estimates how long it would take to crack your password using various attack methods.
  • The progress bar and feedback update instantly, showing the score, estimated crack times, entropy, and suggestions to help you create a stronger password.

Note: This password strength check is performed entirely in your browser. No password data is sent to the server or stored, ensuring your privacy and security.