Bulk UUID Generator
Create a bounded batch of standards-compliant random UUID v4 identifiers without sending values to a server.
A QUICK WALKTHROUGH
How to use this tool
- Enter a whole number from 1 to 1,000.
- Generate the UUIDs and review the one-per-line result.
- Copy the batch or download it as a UTF-8 text file.
Standards-compliant UUID v4
The generator creates 16 random bytes with crypto.randomUUID when available, or crypto.getRandomValues as a secure fallback. It sets the version 4 and RFC variant bits explicitly and formats lowercase hexadecimal output.
Bounded local batch
Each request accepts 1 to 1,000 UUIDs. Values are generated in this browser, are separated by newlines, and are never sent to a server. UUIDs are identifiers, not passwords or encrypted data.
GOOD TO KNOW
Common questions
Which UUID version is generated?
RFC 9562 version 4 UUIDs with the RFC variant.
What is the maximum batch size?
The generator accepts 1 to 1,000 UUIDs per request.
What happens if secure randomness is unavailable?
The tool shows an error and does not fall back to weak pseudo-random or predictable values.