UUID, ULID, and NanoID

These identifier formats are commonly used to assign unique references to records, events, and objects. Each format balances readability, length, and sort behavior differently.

Generation modes

UUID v4 is random and standard. ULID is lexicographically sortable by time. NanoID is compact and URL friendly.

Typical usage

Use this generator when building mock datasets, testing APIs, seeding databases, or creating temporary identifiers in local environments.