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Analyze password strength in real-time. Shows estimated crack time and improvement suggestions.
Type the password you want to check in the input field.
The score, estimated crack time, and character breakdown are displayed in real-time.
Use the warnings and suggestions to create a stronger password.
All processing happens in your browser. Passwords are never sent to a server.
Enter a password to analyze its strength
A tool that analyzes password strength in real-time. It uses the industry-standard zxcvbn algorithm to provide accurate strength assessment considering dictionary attacks and pattern matching. All processing happens in your browser, and passwords are never sent to a server.
No. All processing happens in your browser, and passwords are never sent to a server. When you leave the page, the password is also cleared from memory.
The zxcvbn algorithm evaluates passwords from multiple perspectives including dictionary attacks, keyboard patterns, repetitions, and date patterns. It provides more accurate assessment than simple character type checks.
It divides the number of guesses by the attempt speed of 4 attack scenarios (2 online attacks, 2 offline attacks). Actual crack time varies depending on the attacker's environment.
A score of 4 indicates a very strong password, but does not guarantee absolute safety. We recommend avoiding password reuse and enabling two-factor authentication.
Yes, you can enter any characters. However, the zxcvbn dictionary is primarily English-based, so detection accuracy for language-specific patterns may be limited.