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JSON Schema Generator

Infer a basic JSON schema (types, required keys) from JSON input.

Generated schema will appear here.

JSON Schema Generator – Auto-Generate Schemas from JSON

JSON Schema is a powerful validation and documentation tool for JSON data. It defines the structure, types, and constraints of JSON objects, making APIs more reliable and easier to understand. However, manually writing JSON schemas is time-consuming and error-prone. The JSON Schema Generator by ToolfolioHub automatically infers JSON Schema from sample JSON data, saving time and ensuring accuracy.

Whether you're documenting APIs, validating data, or generating type definitions, this tool creates JSON schemas from your sample data automatically.

What is JSON Schema?

JSON Schema provides:

  • Type Validation: Ensures data matches expected types
  • Structure Definition: Documents object structure and properties
  • Required Fields: Specifies which fields are mandatory
  • Documentation: Self-documenting API contracts

How Schema Generation Works

The tool analyzes your JSON and infers:

  • Property Types: string, number, boolean, object, array, null
  • Nested Structures: Objects within objects
  • Array Items: Types of array elements
  • Required Fields: Properties present in sample data

Use-Cases

  • API Documentation: Generate schemas for API endpoints
  • Data Validation: Create validation schemas for forms
  • Type Generation: Use schemas to generate TypeScript types
  • Testing: Define expected data structures for testing

Conclusion

The JSON Schema Generator automates schema creation from sample JSON data. By inferring types and structure automatically, it accelerates API documentation and data validation setup.