Fresh UUIDs in one click.
Generate secure version 4 UUIDs in batches, then copy the whole list — made right here in your browser, with nothing sent anywhere.
- 1
Pick a batch size
Choose anywhere from one to 500 UUIDs at a time.
- 2
Generate securely
Your browser creates independent random version 4 UUIDs.
- 3
Copy the list
Copy every UUID at once, already separated onto its own line.
Good to know
What kind of UUID does this generate?
Every result is an RFC 4122 version 4 UUID: a 128-bit identifier generated from secure random data and formatted in the familiar 8-4-4-4-12 pattern.
Are these UUIDs cryptographically random?
Yes. The generator uses your browser's crypto.randomUUID()implementation, with a secure crypto.getRandomValues()fallback. It never uses Math.random().
Could two generated UUIDs be the same?
A collision is theoretically possible, but so extraordinarily unlikely for version 4 UUIDs that they are routinely generated independently without checking a central database.
Do the generated UUIDs leave my device?
No. Generation and copying happen entirely inside this browser tab. Humpback does not upload, store, or log the UUIDs you create.