Which UUID version is generated?

The current implementation uses browser Web Crypto randomUUID to generate UUID v4 values.

Why is one run limited to 200 UUIDs?

The 200-value limit keeps output, copying and mobile review manageable. Generate larger batches in multiple runs.

EffiRoom

UUID/GUID Generator

Generate UUID v4 values in batch

Runs locally in your browser; input is never uploaded

Encoding & Security

CountUppercaseKeep hyphens

Usage

Set a count from 1 to 200, optionally choose uppercase and keep hyphens, then run. The shared output contains one Web Crypto UUID v4 per line. Browsers without secure random UUID support only produce diagnostics.

FAQ

1.
Which UUID version is generated?
The current implementation uses browser Web Crypto randomUUID to generate UUID v4 values.
2.
Why is one run limited to 200 UUIDs?
The 200-value limit keeps output, copying and mobile review manageable. Generate larger batches in multiple runs.