Security Tools
Browser-based security utilities — passwords, hashes, and lookups. Nothing leaves your device.
About Security Tools
The security tools on useTool are designed with one principle: your sensitive data never leaves your browser. Password generation, strength analysis, and hash computation all run locally using the Web Crypto API — the same cryptographic library used by browsers for TLS and secure storage. No passwords, no input text, and no hash outputs are sent to any server.
The password generator uses cryptographically secure random number generation, not the pseudo-random algorithms used for general programming tasks. This produces passwords that are genuinely unpredictable, not just visually complex. The strength meter analyzes entropy, character distribution, and known pattern matches to give you a realistic assessment before saving a credential. The hash generator supports MD5, SHA-1, SHA-256, and SHA-512 for file integrity checks, content fingerprinting, and understanding how hashing works in authentication systems.