UUID Generator

UUID Generator produces version 4 UUIDs — 128-bit random identifiers in the standard xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx format. UUIDs are used as primary keys in distributed databases, session tokens, file names, and anywhere a globally unique identifier is needed without a central authority.

Because UUIDs are generated independently on any machine, two systems can create records simultaneously with no coordination and no collision risk.

Tip: Generate multiple UUIDs at once when you need to pre-populate a seed file or test fixture. UUIDv4 is random, so there is no meaningful order — if you need sortable IDs, look into ULIDs or UUIDv7 instead.