Password Strength Checker

Knowing a password is "strong" is not enough — you need to understand exactly why it is or isn't. The Password Strength Checker evaluates length, character diversity, common patterns, and dictionary hits to give actionable, specific feedback.

What Gets Analyzed

• Length: The single most impactful factor. Each extra character multiplies the search space.
• Character Diversity: Mixing uppercase, lowercase, digits, and symbols expands the keyspace exponentially.
• Common Patterns: Keyboard walks (qwerty), leet substitutions (p4ssw0rd), and repeated chars lower effective entropy.
• Dictionary Check: Known common passwords are flagged regardless of how "complex" they appear.