Mock JSON API Generator
Generate realistic mock data from JSON schemas for API testing, development, and prototyping. Create multiple records with customizable fake data instantly.
Generated mock data will appear here
Generation Options
How to Use the Mock JSON Generator
Step-by-Step Guide
- Enter your JSON schema in the left panel or load a template
- Configure generation options (number of records, formatting, etc.)
- Click "Generate Mock Data" to create realistic test data
- Copy the generated data or download it as a JSON file
- Use the mock data in your applications, tests, or prototypes
Supported Data Formats
Personal Data
name, email, phone, address, city
Business Data
company, url, uuid
Date/Time
date, datetime
💡 Pro Tips
- Use the "format" field in your schema for realistic data types
- Generate multiple records to test pagination and lists
- Use nested objects to create complex data structures
- Enable timestamps to track when data was generated
Schema Examples
Basic User Schema
{
"type": "object",
"properties": {
"id": {"type": "integer"},
"name": {"type": "string", "format": "name"},
"email": {"type": "string", "format": "email"},
"isActive": {"type": "boolean"}
}
}Complex Product Schema
{
"type": "object",
"properties": {
"id": {"type": "integer"},
"name": {"type": "string"},
"price": {"type": "number"},
"tags": {
"type": "array",
"items": {"type": "string"}
},
"vendor": {
"type": "object",
"properties": {
"name": {"type": "string", "format": "company"},
"contact": {"type": "string", "format": "email"}
}
}
}
}