Stronger passwords.
Stronger security.
CipherCheck runs advanced entropy, pattern, and exposure checks locally in your browser — nothing you type ever leaves this page.
Overall Score
Enter a password and run analysis to see your score.
Estimated Crack Time
Recommendations
- Run an analysis to generate tailored recommendations.
Password Generator
How the analysis runs
Four passes, entirely client-side, in the order your password is actually evaluated.
Input Password
Captured locally in your browser's memory — never transmitted, logged, or stored.
Entropy Analysis
Measures character-pool size and unpredictability to estimate real bit-strength.
Pattern Detection
Flags dictionary words, keyboard walks, and sequential or repeated characters.
Security Score
Weighs every signal into a single 0–100 score with plain-language guidance.
Built for people who take passwords seriously
Entropy Analysis
Calculates true randomness from character pool and length, not just a checklist.
Leak Detection
Cross-references known breach corpora to warn you before an old habit becomes a risk.
Pattern Recognition
Catches keyboard walks, dates, and dictionary substitutions attackers try first.
Secure Generation
Produces cryptographically random passwords tuned to the policy you set.
Privacy First
Every check runs on-device. No password is ever sent to a server, logged, or stored.
Instant Scoring
Full analysis completes in milliseconds, with a score you can act on immediately.