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Current toolPassword strength checker
Security · SEC-07Submit an issue

Password strength checker

Estimate password entropy and strength, with checks for common, repeated and sequential patterns.

Entropy estimate · Weak pattern checks
Input
Result
Usage guide and examples

Password strength checker

Enter a password to view its strength, length, character types and estimated entropy. It is hidden by default; the button on the right shows or hides it without changing the password or analysis.

Check the input format and options with this example before using your own data. Random values, file sizes and presentation vary with the input and settings.

Example input and settings

password123

What to check in the result

pattern → password + 123
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