---
title: "JSON Faker"
description: "Generate fake JSON from field types. Pick name, email, address, UUID, and 40+ types, then generate test records in your browser."
url: https://findutils.com/developers/json-faker/
category: developers
---

# JSON Faker

Generate fake JSON from field types. Pick name, email, address, UUID, and 40+ types, then generate test records in your browser.

**Use this tool:** [JSON Faker](https://findutils.com/developers/json-faker/)

## Programmatic access

- REST id `json-faker`: POST https://api.findutils.com/api/tools/json-faker/execute (reference: https://findutils.com/api/json-faker/)
- MCP tool `json_faker` on https://mcp.findutils.com (reference: https://findutils.com/mcp/json-faker/)

## Why Use JSON Faker?

JSON Faker generates fake JSON from field types. Build a schema of named fields, pick a type for each field, set the record count, and generate. Use it for UI prototypes, API mocks, unit tests, and demo data.

## Tips for Better Fake Data

- Match your field names to the exact property names your application expects so you can paste the generated JSON directly into your codebase without renaming anything.
- Use the UUID field type for primary keys and foreign keys to simulate realistic relational data structures in your test datasets.
- Generate a small batch first to verify the schema, then scale up to hundreds or thousands of records once the structure looks correct.
- Match field types to the JSON your app expects so the generated records drop into mocks and tests without renaming keys.
- Download the output as a.json file and commit it to your repository as a test fixture so your entire team works with the same sample data.

## Frequently Asked Questions

### How many records can I generate?

You can generate up to 1000 records at once. For larger datasets, consider generating in batches or using a dedicated data generation service.

### Is the data truly random?

Yes, each generation creates unique data. Names, emails, addresses, and other fields are randomly combined to create realistic but fictional records.

### Can I use this data in production?

This data is intended for testing and development only. The generated emails, phone numbers, and addresses are fictional and should not be used for real communications.

### What field types are supported?

Over 40 types are available including first name, last name, full name, email, phone, address, city, country, zip code, company, job title, URL, UUID, date, boolean, integer, float, paragraph, sentence, color, IP address, latitude, longitude, and more.

### Is my schema sent to a server?

No. All data generation happens locally in your browser using client-side JavaScript. Your field definitions and generated output never leave your device.

### What does generate from field types mean?

You name each field and pick a type such as email, UUID, or city. JSON Faker fills every field with a matching fake value and returns a JSON array of records.

### Can I generate nested objects?

JSON Faker generates flat records. Each record is an object of the field names you set. Build nested JSON after generation in the Visual JSON Editor if you need extra structure.

### Is there a way to reproduce the same dataset?

Each generation is random and there is no seed parameter. If you need reproducible data, generate it once, download the JSON file, and commit it to your repository as a fixture.

### Can I export the output as CSV instead of JSON?

The tool outputs JSON format. To convert the result to CSV, copy the JSON and paste it into the JSON to CSV converter which handles flat JSON arrays with a single click.

### Does JSON Faker require a signup?

No. JSON Faker is available with no sign-up, no daily limits. You can generate as many datasets as you need, as often as you need them.

## Related Tools

- [JSON Schema Validator](https://findutils.com/developers/json-schema-validator/)
- [JSON Schema Generator](https://findutils.com/developers/json-schema-generator/)
- [JSON Formatter](https://findutils.com/developers/json-formatter/)
- [Visual JSON Editor](https://findutils.com/developers/visual-json/)
- [JSON to TypeScript](https://findutils.com/developers/json-to-typescript/)
- [UUID Generator](https://findutils.com/generate/uuid-generator/)
- [Lorem Ipsum Generator](https://findutils.com/generate/lorem-ipsum-generator/)