UUID Generator
Generate cryptographically secure UUIDs (v4 and v7). Perfect for database keys, API identifiers, and distributed systems.
Version:
00000000-0000-0000-0000-000000000000
About UUID Generator
This tool generates cryptographically secure UUIDs (Universally Unique Identifiers) using the Web Crypto API. Both UUID v4 (random) and UUID v7 (time-ordered with random component) are supported.
UUID Versions Explained
- UUID v4: Random UUID — 122 bits of random data. Best for general purpose identifiers where order doesn't matter.
- UUID v7: Time-ordered UUID — millisecond timestamp + random data. Better for database index performance (sequential-like).
Common Use Cases
- Database Primary Keys: Use UUID v7 for better B-tree index performance in PostgreSQL, MySQL, etc.
- API Identifiers: Generate unique IDs for REST API resources and events.
- Distributed Systems: Generate conflict-free IDs across multiple nodes without coordination.
- Testing & Mock Data: Quickly generate bulk UUIDs for development and testing.