What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit label used to uniquely identify information in computer systems. UUID v4 uses random generation for maximum uniqueness.
Use Cases
Database primary keys · Session IDs · File names · API keys · Distributed systems · Request tracking · Feature flags · Transaction IDs
Cryptographically Random
This tool uses the Web Crypto API (crypto.randomUUID) for cryptographically secure random generation — the same standard used by browsers and servers.