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UUID Generator

Generate valid UUID v4 values locally for API payloads, database rows, fixtures and test data without leaving the browser.

Generate one or many UUID v4 values, then copy one or the full batch.

✓ Tool inputs are processed in your browser✓ No account
Generate UUID v4 values locally in your browser.

When to use this tool

Use it when you need fresh UUID v4 values for development work such as database records, API examples, fixtures or configuration values. Generation happens locally in the browser so nothing is sent to a server.

  1. Generate IDs for seeded database rows or mock records.
  2. Prepare UUID values for API examples, event payloads or fixtures.
  3. Create a batch of unique identifiers without opening a terminal.
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FAQ

Questions

Questions

What UUID version does this generator create?

This tool generates RFC 4122 compatible UUID v4 values in canonical lowercase format.

Are UUIDs generated locally in the browser?

Yes. Generation happens on your device with browser crypto APIs and no request is sent to a server.

Can I generate more than one UUID at a time?

Yes. Set the quantity and the tool will create a batch that you can copy one by one or all at once.