JSON Input
Powerful Generation Features
Everything you need to generate TypeScript interfaces from JSON data.
Automatic Generation
Convert JSON objects to TypeScript interfaces with a single click, handling nested objects and arrays
File Upload Support
Upload JSON files directly or paste content for quick interface generation
Customizable Output
Configure interface names, optional properties, exports, and more with advanced settings
Export Options
Download generated interfaces as .ts files or copy to clipboard for immediate use
Generation Capabilities
Comprehensive TypeScript interface generation with multiple options.
Type Detection
Automatically detects and converts JSON types to TypeScript equivalents
- String, number, boolean types
- Object and array types
- Null and undefined handling
- Nested structure support
Interface Options
Flexible configuration for different TypeScript interface needs
- Custom interface names
- Optional properties (?)
- Export declarations
- Comment generation
Advanced Features
Powerful options for complex JSON structures
- Nested object flattening
- Array type inference
- Recursive interface generation
- TypeScript syntax compliance
Perfect For
Discover the many scenarios where JSON to TypeScript conversion is essential.
Generate TypeScript interfaces from API responses
Create type definitions for JSON configuration files
Build type-safe interfaces for database schemas
Convert JSON data structures to TypeScript types
Automate interface generation for large JSON objects
Ensure type safety when working with external JSON APIs
Why Generate TypeScript Interfaces?
TypeScript interfaces provide compile-time type checking, better IDE support, and improved code maintainability. Converting JSON to interfaces ensures type safety when working with external APIs, configuration files, or data structures.
Frequently Asked Questions
What types of JSON structures are supported?
The tool supports all standard JSON structures including nested objects, arrays, primitive types (string, number, boolean), and null values. It can handle complex nested hierarchies and generate appropriate TypeScript interfaces.
Can I customize the generated interface names?
Yes, you can specify custom interface names in the settings. For nested objects, the tool automatically generates meaningful names based on the parent object keys.
Does it handle optional properties?
Yes, you can enable optional properties in the settings. When enabled, all properties will be marked with the '?' operator, making them optional in the TypeScript interface.
Can I use this for API response types?
Absolutely! This tool is perfect for generating TypeScript interfaces from API responses. Simply paste your JSON response and get properly typed interfaces for your frontend code.
What about arrays of objects?
The tool intelligently detects arrays and creates appropriate TypeScript array types. For arrays of objects, it generates a separate interface for the object type and marks the property as an array of that type.
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