UUID Generator
Generate v4 UUIDs, one or fifty at a time.
Runs entirely in this tab. Nothing is uploaded.
Result
Frequently asked questions
Are these random enough to rely on?+
Yes. They come from crypto.randomUUID(), which uses the platform's cryptographic random source.
Are they logged?+
No. They are generated in your browser and never sent anywhere.
What does the 4 in v4 mean?+
It is the version. A v4 UUID is built from random bits rather than from a timestamp or a network address, which is why it reveals nothing about the machine or the moment that produced it.
How likely is a collision?+
A v4 UUID carries 122 random bits. You would need to generate them in astronomical quantities before a repeat was worth planning around, which is what makes it safe for separate machines to mint them independently without coordinating.
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