JSON Type Generator
Automation tool converting JSON data to multiple programming language type definitions. No manual type declaration writing needed; just paste JSON data to quickly generate accurate type definition code.
Main Functions
Multi-language Support
Generates type definitions for multiple mainstream languages: TypeScript (interfaces or type aliases), Rust (structs and enums), Kotlin (supports Jackson and kotlinx.serialization), Python (Pydantic models), JSON Schema (standard format)
Smart Type Inference
Auto-analyzes JSON data structure, identifies data types, generates accurate type definitions. For nested objects and arrays, recursively generates all necessary type declarations.
Naming Convention Conversion
Customize property name format supporting multiple common conventions: camelCase, PascalCase, snake_case, kebab-case, and uppercase variants
Import Style Management
For generated type definitions, choose different import handling: assume existing imports, add required imports, use fully qualified paths
Use Cases
API Response Type Definitions
In frontend development, quickly convert backend API returned JSON to TypeScript type definitions improving code type safety.
Quick Data Model Building
During project initialization or refactoring, quickly generate data model type definitions from existing JSON data samples accelerating development.
Cross-language Type Migration
When migrating projects between programming languages, use this tool to quickly convert data type definitions reducing manual conversion work and error rates.
Advanced Options
- Expand Paths: Use JSON pointer syntax to specify nested paths to expand
- Collect Unknown Properties: When enabled, generated types allow additional undeclared properties
- Custom Type Name: Specify custom name for generated root type
Important Notes
Generated type definitions should be reviewed and adjusted based on actual business needs. For complex or special data structures, may need manual optimization of generated code.
