JSON API Mock Generator

Generate realistic sample JSON responses for APIs with customizable structure and data types.

API Configuration

Custom Fields

💡 Quick Examples

How to use JSON API Mock Generator

  1. 1
    Configure response — Choose response type, array size, and data theme.
  2. 2
    Add custom fields — Optionally add custom fields with specific data types.
  3. 3
    Generate mock data — Click "Generate Mock Data" to create the JSON response.
  4. 4
    Copy or regenerate — Use the data or regenerate with different random values.

The JSON API Mock Generator runs entirely in your browser — your data never leaves your machine. Perfect for API development, testing, and documentation.