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UUID Generator

Generate v4 UUIDs in bulk with a cryptographic source.

    Private by design. This tool runs entirely in your browser. Your input is processed on your own device and is not uploaded by DO101.

    About the UUID Generator

    Create random version-4 UUIDs using the browser's cryptographic random number generator. Generate one, or a thousand, and copy or download the list.

    How to use it

    1. 1Choose how many UUIDs you need.
    2. 2Press generate.
    3. 3Copy the list or download it as a text file.

    What you get

    • Up to 1,000 at a time
    • Uses crypto.getRandomValues
    • Uppercase, no-dash and braces formats
    • Copy all or copy one
    • Generated locally — never on a server

    Frequently asked questions

    Are these UUIDs really unique?

    A v4 UUID has 122 random bits. The chance of a collision is negligible for any realistic number of IDs, which is why they are safe to generate client side.

    Do you log the generated values?

    No. They are produced in your browser and never sent anywhere.

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