Documentation · Generators
Back to toolID Generator
Generate and validate unique CUID2, UUID v4, UUID v7, and Nano ID identifiers in the browser — one at a time or in bulk.
How to use
- Choose the format (CUID2, UUID v4, UUID v7, or Nano ID).
- Generate a single ID or a batch.
- Use the validation tab to check whether an existing ID matches the expected format.
When to use each format
| Format | Traits |
|---|---|
| UUID v4 | Random, widely supported |
| UUID v7 | Time-sortable (helpful for indexes) |
| CUID2 | Secure, application-friendly IDs |
| Nano ID | Compact, URL-friendly |
Frequently asked questions
Are IDs sent to a server?
No. Generation and validation run locally.
Can I generate hundreds of IDs at once?
Yes. The UI supports batches — useful for test seeds and fixtures.