Password Strength Analyzer
Analyze password strength in real-time. Displays detailed information such as crack time, entropy, character set size, and score. All processing is performed locally in the browser, and passwords are not sent to the server.
How to use
About this tool
Analyzes password strength in real-time. Displays detailed information such as crack time, entropy, character set size, and score. All processing is performed locally in the browser, and passwords are not sent to the server.
How to use
Enter a password in the input field; analysis results update in real-time. Crack duration, password length, entropy, character set size, and score (weak/medium/strong) are displayed instantly.
Options
Input: Password string (max 1000 characters). When you enter a password, the following information is displayed in real-time: crack duration (time needed for brute-force attack), password length, entropy (in bits), character set size (number of character types used), score (0-100) and category (weak/medium/strong).
Use cases
• Checking password strength • Verifying compliance with security policies • Validating generated passwords • Evaluating existing passwords • Security education and training
How it works
Entropy is calculated using Shannon entropy (information-theoretic entropy). Crack time is calculated based on character set size and password length, assuming a standard attack speed (1 trillion attempts/second). Score is a composite of length (40 points), entropy (40 points), and character set size (20 points).
Privacy and data
All calculations are performed in the browser; passwords are never sent to a server. Passwords are handled in memory and reset when the page is reloaded.