## Unique Identifiers Explained
Unique identifiers are essential for database primary keys, session tracking, and distributed systems. Generate UUIDs v4, v1, NanoID, and ULID in bulk locally.
Developer Tutorials•
3 min read
•August 6, 2026How to Generate UUID v4, v1, NanoID, and ULIDs Online in Bulk
Learn the differences between UUID v4, v1, NanoID, and ULIDs, and generate them instantly in bulk for your database requirements.
## Unique Identifiers Explained
Unique identifiers are essential for database primary keys, session tracking, and distributed systems. Generate UUIDs v4, v1, NanoID, and ULID in bulk locally.