UUID generator · Guide
Using UUIDs for Test Data
Test data needs unique identifiers, and UUIDs supply them without a central counter. Here is how they help.
Independent uniqueness
Because v4 UUIDs are random, you can generate them anywhere — in seeds, in tests, on the client — without coordinating to avoid duplicates. That keeps fixtures simple.
Generate in batches
Produce as many as your dataset needs in one go and paste them into your seed script or fixture file.
Frequently asked questions
Can I use this for production work?
Yes, for inspection, formatting and quick generation. Still review the output before committing it to production code or configuration.
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Open the free browser-based UUID generator and apply what you just read — no sign-up, runs locally.
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