About this tool
The UUID Generator creates version 4 UUIDs — universally unique identifiers built from cryptographically random bytes. UUIDs are the standard way to generate IDs that are statistically guaranteed to be unique across distributed systems without any central coordination or sequential counters.
UUIDs are used everywhere in software: as primary keys in databases, as identifiers for API resources, session tokens, file names, and tracking IDs. Because they're random and not guessable, they provide a basic layer of security for resource URLs and reduce the risk of ID enumeration attacks.
You can generate multiple UUIDs at once and copy them individually or all together. All generation happens in your browser using the Web Crypto API, which provides cryptographically secure randomness — the same quality of randomness used in security-sensitive applications.