UUID v4 Generator

Generate a cryptographically-random UUID v4. Uses the browser's secure random source — generated locally, never logged.

100% freeNo sign-upRuns in your browserNo upload · data stays private

📖 Read the full UUID v4 Generator guide — how it works, examples & FAQ →

How to use this tool

  1. Click Generate for a fresh UUID.
  2. Copy it.
  3. Generate again for another.

Example

→ 3f50b2e1-9c4a-4f7b-8a2d-1e6c9b0a7d4f

Why it's private

This tool runs entirely in your browser using JavaScript. Whatever you paste is processed on your own device — it is never uploaded to a server, logged, or stored. Built by Calabi, which also strips AI metadata and C2PA signals from images and video.

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