Calculate Shannon bits of entropy and estimate GPU cluster cracking times.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Enter your password to audit its cryptographic entropy.
Review total pool size, Shannon bits score, and strength classification.
View estimated time required to crack the password under GPU and supercomputer attacks.
NIST and security standards consider 60+ bits strong and 80+ bits virtually unbreakable against modern brute-force attacks.
No, the calculation is performed 100% locally in your browser memory via pure client-side math.
Zero-egress companion tools in the Security & Network suite
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Brute-force all 256 single-byte XOR keys with automated English frequency & chi-squared scoring.
Audit CSP, HSTS, X-Frame-Options, and security headers with OWASP grading (A+ to F).
Compare memory hardness, GPU ASIC resistance, and security parameters across KDF standards.
