Question 1

How is password strength calculated?

Accepted Answer

Strength is calculated using entropy (the number of possible combinations) based on character set size and length. Penalties are applied for common passwords, dictionary words, repeated characters, sequential patterns, and keyboard patterns. The result is a score from 0 to 100.

Question 2

Is my password sent to a server?

Accepted Answer

No. All analysis happens entirely in your browser. Your password is never transmitted over the network or stored anywhere.

Question 3

What makes a strong password?

Accepted Answer

A strong password is long (12+ characters), uses a mix of uppercase, lowercase, numbers, and special characters, avoids common words and patterns, and is unique to each account. Consider using a passphrase of random words for better memorability.

🔒 Password Strength Checker

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