UUID Generator
UUID Generator is a free online tool for batch-generating RFC 4122-compliant UUID v4 identifiers using the browser's cryptographic random number generator. Create up to 500 UUIDs at once, copy them individually or all at once, and export the list as a text file.
UUIDs are generated entirely in your browser and never sent over the network; the tool is free and requires no sign-up. Useful for developers creating database keys, request trace IDs, or device identifiers, and for testers who need bulk unique test data fast.
How to Use
- Enter how many UUIDs you need (1-500)
- Click Generate to create them in one batch
- Copy a single UUID or copy the whole list at once
- Click Export to download the list as a .txt file
FAQ
Is this UUID generator free?
Yes, it is completely free with no registration required and no limits on how often you generate.
Are the generated UUIDs uploaded anywhere?
No. UUIDs are generated locally using the browser's cryptographic random number API — nothing crosses the network and nothing is logged.
Which UUID version is generated? Can they collide?
The tool generates RFC 4122-compliant UUID v4 (fully random) with 122 bits of randomness. The collision probability is negligible in practice, so they are safe to use as unique identifiers.
How many UUIDs can I generate at once?
Up to 500 per batch. If you need more, simply generate again and export in batches — there is no overall limit.