About this hash & UUID generator

Type or paste any text and its MD5, SHA-1, SHA-256, SHA-384 and SHA-512 digests update live, in lowercase hex, each with a one-click copy button. SHA hashes use the browser's native crypto.subtle WebCrypto implementation; MD5 (which WebCrypto doesn't provide) ships as a compact RFC 1321 implementation. Text is encoded as UTF-8 before hashing.

The UUID section generates up to 100 random version-4 UUIDs at a time using crypto.randomUUID(). Handy for test data, database seeds and correlation IDs. Remember that MD5 and SHA-1 are fine for checksums but broken for security purposes — use SHA-256 or better for anything security-related. Everything runs client-side; your input never leaves the browser. Related tools: Base64 / URL Encoder & JWT Decoder.