What it does
Create identifiers for synthetic data, resource names and tests. UUID v4 provides randomness; it does not prove identity or replace access controls.
When to use it
Use this workflow when the example below matches your task and the documented limits fit your input. Keep the original and review the output before sharing it.
Steps
- Choose a count from 1 to 100.
- Select Generate; each run creates a new sample.
- Copy or download the list and check its destination before use.
Worked example
Count: 3.
Three UUIDs matching xxxxxxxx-xxxx-4xxx-[89ab]xxx-xxxxxxxxxxxx.
Common mistakes and limitations
- UUID v4 only, up to 100 per run. Requires crypto.randomUUID.
- No Math.random fallback or remote service. Collisions are unlikely, not mathematically impossible.
Frequently asked questions
Is my input uploaded?
No. Processing runs in your browser. Visiting the site downloads public software and resources; this tool does not automatically save your input or results.
How do I check the result?
Start with the worked example, compare the output and use synthetic data before processing sensitive information. Downloaded files should be opened in an independent reader.