When to use UUIDs
UUIDs let separate systems create identifiers without coordinating, which is useful for database keys, idempotency keys, and test fixtures. Version 4 UUIDs are random and reveal nothing about when or where they were created.
Tool category
Developer Generators
Generated values are only as good as their randomness. DevKitly's generators use crypto.randomUUID() and crypto.getRandomValues(), which draw from your operating system's secure random source rather than a predictable pseudo-random function.