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SleekPrompt

UUID Generator

Generate cryptographically random UUID v4 identifiers in bulk, in any case or format you need.

0 UUID v4

From your OS random source

    How to use the UUID Generator

    1. 1

      Choose how many UUIDs you need — up to 1,000 at once.

    2. 2

      Pick uppercase, no-hyphen or quoted formatting if your target needs it.

    3. 3

      Copy the whole list or download it as a text file.

    Frequently asked questions

    Are these UUIDs actually random?

    Yes. They come from crypto.randomUUID(), which is backed by your operating system's cryptographically secure random number generator — not Math.random().

    Could a UUID ever repeat?

    A v4 UUID has 122 random bits. You would need to generate about 2.7 × 10^18 of them before a single collision became likely, so in practice it will not happen.

    Is my data uploaded to a server?

    No. Every tool on this site runs entirely inside your browser using JavaScript. Your input never leaves your device and is never sent over the network, which means it is safe to paste production data, API responses and tokens.