Is any data sent to a server?

No. All generation happens entirely in your browser using JavaScript. Nothing is transmitted or stored on any server.

How many records can I generate?

You can generate between 1 and 500 records per batch. For larger datasets, generate multiple batches and combine the arrays.

Are the generated values realistic?

Yes. Names are drawn from a built-in list of common first and last names. Emails use safe example.com / example.org domains. Addresses use US-style street patterns. All values are plausible but entirely fictional.

Can I choose specific fields?

Yes. Toggle any combination of the available fields: id, first name, last name, full name, email, phone, age, gender, job title, company, address, city, state, zip code, country, website URL, and avatar URL.

What format is the output?

The output is a standard JSON array where each element is an object with the fields you selected. It is pretty-printed with 2-space indentation for readability.

Sample JSON Data Generator — Online, Dummy & Test

Summary

Choose your fields and record count, then instantly generate a realistic JSON array for testing, prototyping, or seeding databases.

How it works

Select which fields you want in each record using the checkboxes.
Drag the slider or type a number to set the record count (1–500).
Click Generate to produce the JSON array.
Use Copy JSON to copy the full output to your clipboard.
Click Download to save the JSON file to your device.

Use cases

Seed a development or staging database with realistic-looking records.
Prototype REST API responses without standing up a back-end.
Generate fixture files for unit and integration tests.
Populate front-end components with realistic data during UI development.
Create mock datasets for data-visualization demos and dashboards.
Fill spreadsheet or CSV imports with test rows before production data is available.

Sample JSON Data Generator

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