Password Strength Checker

Type a candidate password to see qualitative strength signals without storing or transmitting the string.

Result

Ready.

Strength signals beyond "complexity rules"

Corporate policies often mandate symbols yet allow eight-character passwords that crack quickly. This checker emphasizes length and unpredictability over checkbox compliance so teams can align with NIST-style guidance.

Pattern traps

Appending ! to Password1 satisfies naive regex rules but not attackers with hybrid dictionaries. Passphrases of four or more random words typically outperform short "complex" strings.

Pre-deployment policy checks

Product teams can sanity-check generated defaults or reset flows before shipping. A meter helps UX copy explain why a rejected password failed without revealing server-side rules exhaustively.

FAQ

What makes a password "strong" here?
Length dominates. Mixed case, digits, and symbols add entropy, but dictionary words and keyboard walks weaken scores even when symbols are appended.
Is my password saved or logged?
No. Analysis runs in memory in your browser tab. Closing or refreshing clears the field—still avoid checking real credentials on shared kiosks.
Does a high score mean breach-proof?
No. Strength meters cannot know if the password was reused from an old leak. Pair strong unique passwords with a manager and enable MFA on critical accounts.