UUID Generator
Generate random UUID v4 identifiers.
History
Your generated UUIDs will appear here
Understanding UUID Generation
UUIDs (Universally Unique Identifiers) are 128-bit numbers used to uniquely identify information in computer systems. They guarantee uniqueness across space and time, making them ideal for distributed systems.
Key Features
- Multiple UUID versions
- Guaranteed uniqueness
- Batch generation
- Format options
- Cross-platform compatibility
Common Use Cases
- Database primary keys
- Transaction IDs
- Session identifiers
- File names
- API request tracking
UUID Versions Explained
UUID v1
Time-based with MAC address. Contains timestamp and node ID. Not recommended due to privacy concerns with MAC exposure.
UUID v4
Random-based. Most common version. Uses random or pseudo-random numbers. Provides excellent uniqueness guarantees.
UUID v7
Time-ordered random. Combines timestamp with random data. Sortable by generation time while maintaining privacy.
Security Considerations
UUIDs are not cryptographically secure. For security-sensitive applications, consider using v4 with a cryptographically secure random generator.