Version 4 UUIDs from the browser cryptographic random source — not Math.random, which is what a surprising number of generators quietly use.
This page loads no libraries at all — the work is done by the browser itself.
Your file is read on your own machine and never sent anywhere — open your
browser's network tab and watch while you use it.
Questions
Are these properly random?
Yes. They come from crypto.randomUUID, which uses the operating system random source.
How many can I make at once?
Up to a thousand in one go.
Other text & code tools
Everything here is free and works the same way — in your browser.