UUID生成器
Description
UUID Generator can quickly generate Universally Unique Identifiers (UUID) conforming to RFC 4122 standard, supporting multiple format outputs. Ideal for database primary keys, API identifiers, distributed system unique ID generation, and more.
Use Cases
Database primary key generation: Create globally unique identifiers for data records
API request tracking: Assign unique IDs to each API request for log tracing
Distributed systems: Generate non-duplicate identifiers across multiple nodes
File naming: Generate unique filenames to avoid naming conflicts
Test data: Batch generate unique identifiers for testing purposes
Instructions
Set the number of UUIDs to generate (1-100)
Choose UUID format (uppercase/lowercase, with/without hyphens)
Click "Generate" to create UUIDs
Copy individual UUIDs or all at once
Refresh to generate a new batch
Notes
- Generates version 4 (random) UUIDs
- All generation is done locally in the browser
- UUIDs are cryptographically random
- No two UUIDs will be the same in practice
FAQ
What UUID version is generated?
Version 4 (random) UUIDs are generated, which is the most commonly used version.
Are generated UUIDs truly unique?
Version 4 UUIDs use cryptographically random numbers. The probability of collision is astronomically low.
Can I customize UUID format?
You can choose between uppercase/lowercase and with/without hyphens. The standard format is supported.