Free online password security strength detection, real-time evaluation of password level, provides detailed scoring items and security recommendations to help you create more secure passwords and protect personal information and account security
Enter the password you want to check in the password input box, supports any length and character combination passwords.
After entering, the system will analyze password strength in real-time, display strength level (Weak/Medium/Strong/Very Strong/Extremely Strong) and progress bar.
View detailed scoring items and security recommendations, optimize your password according to suggestions, improve security level.
Check password strength when registering new accounts, ensure account security
Evaluate new password security level when changing password
Enterprise employee password security training and detection tool
Developers testing password strength validation functionality
Learn password security knowledge, understand what makes a password more secure
Personal or enterprise password security audit and evaluation
A strong password is one that is difficult to brute force or guess, typically has sufficient length (at least 8 characters), contains a combination of uppercase and lowercase letters, numbers and special characters, does not contain personal information or common words. Strong passwords can effectively resist dictionary attacks, brute force attacks and social engineering attacks.
Password length directly determines the entropy and cracking difficulty of a password. Each additional character multiplies the possible combinations by the character set size. For example, an 8-digit pure numeric password has only 100 million combinations, while a 12-character password with uppercase, lowercase letters, numbers and symbols has 92^12 combinations, almost impossible to brute force.
Common weak passwords include: consecutive numbers (123456), keyboard sequences (qwerty), common words (password), personal information (birthday, name), repeated characters (aaaaaa), simple patterns (abc123) etc. These passwords are easily cracked by dictionary attacks or social engineering.