Hash Generator / Hash Checker
The Hash Generator and Hash Checker lets you create cryptographic hashes from text input and compare hash values for integrity verification. Choose from five widely used algorithms — MD5, SHA-1, SHA-256, SHA-384, and SHA-512 — and instantly generate the corresponding hash for any text string. The comparison mode lets you paste an expected hash value alongside your original text to verify whether they match, with clear green or red status indicators. Case-insensitive comparison is enabled by default to handle uppercase and lowercase hex differences. This tool is useful for verifying file integrity checksums, validating API signatures, checking password hashes during development, and confirming data has not been altered in transit. All hashing is performed locally in your browser using the Web Crypto API (and a built-in MD5 implementation) — no data is transmitted to any server. A fast, private utility for developers, sysadmins, and security professionals.