Lumarc DevTools

Generator Tools

UUID Generator

Generate RFC 4122 version 4 UUIDs locally using the browser crypto API.

Processed locally — your data never leaves this browser. Input: Options Output: UUID list
Options

Processed locally — your data never leaves this browser.

UUID list

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Example input and output

One UUID

Count: 1
9f4d5c7e-3a4b-4c2d-9f22-17667a2b6c11

How to use UUID Generator

Paste or enter your options, adjust any options, then run the tool. The result appears in the output panel where you can copy or download it.

Related guides

What this tool does

The UUID Generator creates random version 4 UUIDs with crypto.randomUUID when available. It is free to use and designed for technical workflows where pasted data should stay private.

Common use cases

  • Create IDs for fixtures
  • Generate test database keys
  • Prepare correlation IDs

Privacy and security

Processed locally — your data never leaves this browser. Lumarc DevTools does not include a backend, account system or hidden analytics in this initial release.

Limitations

  • UUIDs are statistically unique, not a substitute for authorization secrets.

Frequently asked questions

Are generated UUIDs stored?

No. UUIDs are generated in the page and are not saved by default.