Generate deterministic RFC 4122 UUIDv5 IDs from namespace UUIDs and name strings.
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.
Select standard DNS, URL, OID, X500 or enter custom 128-bit namespace UUID.
Type the domain or name string to hash.
Copy the deterministic 36-character UUIDv5 identifier.
UUIDv5 is deterministic: the same namespace and name string always produce the exact same UUID, avoiding duplicate entity IDs.
UUIDv5 uses SHA-1 hashing according to the IETF RFC 4122 specification.
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