Security Tools for Developers

Password Strength Checker

The Password Strength Checker goes deeper than a simple green/red indicator. It calculates Shannon entropy based on character pool size and password length, detects keyboard patterns (qwerty, 1234), common passwords, repeated sequences and word-plus-number patterns. Shows an estimated crack time against a GPU running 10 billion guesses per second.

Bcrypt Generator

The Bcrypt Hash Generator hashes passwords using the industry-standard bcrypt algorithm. Set the cost factor from 4 (fastest, for testing) to 14 (slowest, for production). The tool runs bcryptjs entirely in your browser — your passwords are never sent to our servers.

Use the verifier tab to check whether a plaintext password matches an existing bcrypt hash. Useful when debugging authentication flows.

Hash Generator

The Hash Generator supports MD5, SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 with hex or Base64 output. For security applications, use SHA-256 or higher. MD5 and SHA-1 are broken for cryptographic purposes but still widely used for checksums and caches.