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Mock Data Generator — Fake Test Data

Generate realistic fake data as JSON or CSV for testing.

Instant 100% in-browser Free

This tool generates realistic-looking fake data — names, emails, addresses, phone numbers, dates, booleans and IDs — in any quantity, exported as JSON or CSV. It is built for seeding test databases, prototyping UIs and writing test fixtures, and it runs entirely in your browser.

How to use it

  1. Choose the fields you want (name, email, address, and so on).
  2. Set how many records to generate.
  3. Pick JSON or CSV output.
  4. Click Generate and copy the result.

About Mock Data Generator

Realistic test data is essential and tedious to produce by hand. Whether you are seeding a development database, building a UI that needs to look populated, or writing tests that exercise edge cases, you need records that resemble the real thing without using anyone’s actual information. This generator assembles plausible fake people and values from built-in name, domain and place lists, then outputs them as ready-to-use JSON or CSV. Everything is generated locally, so there are no rate limits and no data leaves your machine. The data is entirely fictional and safe to use anywhere.

FAQ

Is the generated data real?

No. All names, emails and addresses are randomly assembled and fictional. It is safe to use for testing and demos.

What formats can I export?

JSON (an array of objects) and CSV (with a header row). Pick whichever your tooling expects.

How many records can I generate?

Hundreds at a time, instantly, since generation happens locally in your browser.