No. It is synthetic mock data for development and demos — not production user data.

Can I control field types?

Yes, through the schema controls exposed in the tool (strings, numbers, nested objects, etc.).

Do you store schemas?

No. Everything runs in your browser session.

JSON Generator

JSON Generator builds mock JSON from a schema you define. Speed up API stubs, front-end prototypes, and test fixtures.

Schema

Options

5 objects

150

Pretty print

Generated JSON

[
  {
    "id": 1,
    "name": "Liam Nolan",
    "email": "mia.myers85@example.com",
    "active": true
  },
  {
    "id": 2,
    "name": "Asher Reed",
    "email": "hazel.coleman75@sample.dev",
    "active": true
  },
  {
    "id": 3,
    "name": "Leo Reed",
    "email": "nora.jenkins28@mail.test",
    "active": true
  },
  {
    "id": 4,
    "name": "Noah Brooks",
    "email": "noah.reed71@demo.io",
    "active": false
  },
  {
    "id": 5,
    "name": "Finn Jenkins",
    "email": "iris.parker41@example.com",
    "active": true
  }
]

How to use JSON Generator

Define or adjust the schema/fields you need.
Generate sample JSON data.
Copy or download the output for your project.

Worked examples

Concrete numbers and cases you can check against the tool above.

Mock users for a table UI

A schema like { id: uuid, name: string, email: string } × 25 rows gives you loading, empty, and overflow states without a backend. Keep generated emails obviously fake so nobody tries to mail them.

When to use JSON Generator

Front-end and API work stalls without sample data. Schema-driven mock JSON lets you prototype UI states and tests without a live backend.

Common use cases

Stub a user list for a React table component.
Create fixtures for unit tests.
Demo an API response shape to stakeholders.
Seed a local mock server with realistic nested objects.

Inputs and outputs

Schema-driven mock JSON output

Privacy

This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.

Frequently asked questions

Is the data real?: No. It is synthetic mock data for development and demos — not production user data.
Can I control field types?: Yes, through the schema controls exposed in the tool (strings, numbers, nested objects, etc.).
Do you store schemas?: No. Everything runs in your browser session.

Related tools

More free utilities you may need next — also listed in Text, Writing & Developer Tools and the All Tools directory.

View full category →