Seed data and fixtures
Use it when you need realistic-looking IDs for database records, mocks or API examples.
Free UUID Generator
Generate one or more random UUIDs instantly in your browser.
Files and text are processed locally in your browser. No upload. No signup.
How to use
- 1 Choose how many UUIDs you want to generate.
- 2 Generate a fresh list with one click.
- 3 Copy the results for your app, test data or docs.
Features
- Uses browser crypto for random UUID generation.
- Generate multiple UUIDs at once.
- Copy all values together for quick reuse.
Common use cases
Creating test IDs for seed data
Generating quick identifiers for docs and examples
Making temporary UUID lists without opening a script
Example input and output
Requested count
Generate IDs for test users
3 UUIDs
Generated output
Result you can copy or download
550e8400-e29b-41d4-a716-446655440000 6f9619ff-8b86-d011-b42d-00cf4fc964ff 7d444840-9dc0-11d1-b245-5ffdce74fad2
Each generated value is random and suitable for mock data, but not a replacement for secrets or authentication tokens.
When this tool is the right fit
Docs and examples
It helps when you want believable identifiers in screenshots, tutorials or internal demos.
Fast one-off generation
You can produce a quick list of UUIDs without opening a terminal, script or IDE project.
Quick comparison
| If you need | Best choice | Alternative | Why |
|---|---|---|---|
| Random IDs for examples or fixtures | UUID Generator | Manual placeholder text | Real UUID shapes make demos and test data look more realistic and less error-prone. |
| A stable identifier you can predict | Manual naming scheme | UUID Generator | Random UUIDs are good for uniqueness, not for deterministic naming. |
| A secret token | Dedicated secret generation | UUID Generator | UUIDs are identifiers, not a drop-in replacement for auth credentials. |
Common mistakes
- Generating UUIDs repeatedly but not keeping the list you actually needed.
- Using random UUIDs where a stable identifier would have made more sense.
- Confusing display IDs with secure secrets or tokens.
FAQ
Does this generator create UUID v4 values?
Yes. It uses the browser crypto API to generate random UUIDs.
Can I generate multiple UUIDs at once?
Yes. You can generate a list of UUIDs in one click.
Are the UUIDs truly random?
The generator uses the browser crypto.getRandomValues API, which provides cryptographically strong randomness.
Can I copy all UUIDs at once?
Yes. The generated list can be copied to your clipboard with one click.