UUID v4 batch
Input: Type: UUID v4, count: 5
Output: Five newline-separated UUID v4 values
Developer
UUID / ULID Generator
Generate UUID v4 or ULID identifiers locally, one at a time or in batches up to 100.
Runs locallyNo uploadNo external API
Options
UUIDs are useful identifiers, not passwords, API keys, or security tokens.
Output
Choose UUID v4 or ULID, set a quantity from 1 to 100, then generate IDs locally.
Choose UUID v4 or ULID, set a quantity from 1 to 100, then generate IDs locally.
Generated IDs are created in this browser tab with no upload, account, cloud history, or external API.
Related tools
How to use UUID / ULID
Generate local identifiers for fixtures, database seeds, examples, and test records without creating an account or saving history.
- Paste or type your input.
- Load the sample if you want a quick check.
- Run the action, review the result, then copy only what you need.
Examples
ULID batch
Input: Type: ULID, count: 5
Output: Five 26-character sortable IDs
Copy one ID
Input: Generated list
Output: Copy a single line or the whole batch
Common use cases
Create sample records
Generate IDs before converting JSON fixture rows to CSV.
Choose sortable IDs
Use ULID when lexicographic creation order is useful.
Use checksums separately
Use Hash Generator when you need a digest, not a unique identifier.
Limitations
Identifiers, not secrets
UUIDs and ULIDs identify records. They are not passwords, API keys, or access tokens.
ULID timestamp prefix
ULIDs include approximate creation time in the first 10 characters.
FAQ
Can I generate more than one ID?
Yes. Choose a quantity from 1 to 100 and copy one ID or the full newline-separated list.
Should I use UUID or ULID?
Use UUID v4 for random identifiers and ULID when sortable creation order is useful.
Are generated IDs saved?
No. They are generated in the browser and are not uploaded or stored by Tool Cluster.