Most UUID generators call one function and stop there. Ours does too —
crypto.randomUUID() is universally supported in modern browsers — but
it also ships a second, documented code path: a
crypto.getRandomValues()-based v4 implementation that builds the same
RFC 4122 format by hand, used automatically wherever randomUUID isn’t
available.
The UUID generator also gives you:
- Bulk generation — up to 1,000 UUIDs at once, one per line.
- Format options — uppercase output, and hyphens on or off.
- Copy All — one click grabs the whole batch.
Quantity and formatting options sync to the URL so you can share a pre-configured link. The UUIDs themselves don’t — bulk output would make for an absurd query string, and since every visit regenerates fresh values anyway, there’s nothing meaningful to restore.
Also available en español and embeddable with a single iframe.