Generate UUIDs
Creates random version 4 UUIDs – as many as you need, in your browser.
Runs in your browser – your file is never uploaded
Frequently asked questions
Is my file uploaded?
No. The conversion runs entirely in your browser. The file never leaves your device – there is no server that could see it. Once the page has loaded, the tool even works offline.
Are these UUIDs safe to use as identifiers?
Yes. They come from crypto.getRandomValues, your browser's cryptographic random source – the same one used for keys and tokens. A version 4 UUID has 122 random bits: you would need to generate about a billion per second for 85 years before a single collision becomes likely.
What is version 4?
The variant that is purely random. Other versions encode a timestamp and the machine's MAC address (v1) or hash a name (v3/v5). Version 4 leaks nothing about where or when it was made, which is why it is the usual default.
Do I get the same UUIDs as someone else?
No. Nothing here is seeded or stored, and the values never leave your browser – so the tool itself has no way to repeat them.
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