Create identifiers quickly
Generate random UUIDs for records, fixtures, mock API payloads, migrations and other development workflows.
UUID Generator
Generate random version 4 UUIDs in bulk.
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Create unique identifiers for tests, databases, API payloads, fixtures and development workflows directly in your browser.
- Random UUID v4 generation
- Bulk output
- Uppercase option
- Copy and download output
Generate one or many
Create a single UUID or a bulk list when you need test data, placeholder IDs or import-ready values.
Use standard UUID format
Output uses the familiar version 4 UUID shape, with an uppercase option for systems that prefer capital letters.
Private browser-based generation
UUIDs are generated locally in your browser, so no identifiers are requested from or stored on a server.
Frequently asked questions
It generates random version 4 UUIDs using the browser crypto API where available.
Yes. Choose any count from 1 to 100 and the tool will return one UUID per line.
Yes. Turn on uppercase output to convert the generated UUIDs to capital letters.
No. The tool runs in your browser, so UUIDs are generated locally on your device.