About Password Strength & Entropy Analyzer
Inspect the cryptographic strength of any password. Calculate mathematical Shannon entropy bits, analyze character pool diversity (uppercase, lowercase, numbers, symbols), and simulate estimated crack times against web rate-limiters, GPU rigs, and supercomputers.
Key Capabilities & Features
- Precise Shannon entropy computation in cryptographic bits
- Estimates brute-force times across online attacks, GPU clusters, and supercomputers
- Granular audit of length, casing, numbers, and special character symbols
- Visual strength meter with actionable security feedback
- 100% offline security guaranteed
How to Use Password Strength & Entropy Analyzer
Enter Password
Type or paste the password into the secure input box.
Inspect Entropy
Review the total bits of entropy and character composition rules.
Review Crack Times
Examine estimated cracking durations against modern GPU hardware.
Privacy & In-Browser Execution Guarantee
Passwords are analyzed in local client memory and are NEVER logged, transmitted, or stored.
Frequently Asked Questions
Is it safe to type my real password here?
Yes, because the code executes entirely in your browser memory with zero network requests. However, as general security hygiene, we recommend testing slight variations of master credentials rather than exact live production passwords.
How is offline GPU cracking speed estimated?
Calculations assume dedicated high-end GPU cluster rigs capable of 100 billion hash guesses per second testing against common cryptographic hashes like NTLM or MD5.
What is Shannon entropy in password analysis?
Shannon entropy measures bits of unpredictability based on the size of the available character pool and password length, calculating the theoretical search space for brute-force attacks.