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UUID Generator

Generate a version-4 UUID using your browser’s cryptographic random source, ready to paste into code or a database.

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How to use it

  1. Adjust the options if you want something other than the default.
  2. Press Generate.
  3. Press Copy result to put it on your clipboard.

Example

A sample result
3f2504e0-4f89-41d3-9a0c-0305e82c3301

Questions

Is it random enough to be unique?

Yes. It comes from the browser’s crypto source, which is the same generator used for security work.

Is my text sent to a server?

No. This tool runs entirely in your browser — nothing you type or paste is uploaded, logged or stored anywhere.

Is there a limit on how much text I can use?

There is no fixed limit. Very large documents depend on your device’s memory, but ordinary pages and files are handled instantly.

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