JSON to Code Snippets

It's a developer tool that automatically converts JSON data structures into strongly-typed model classes, interfaces, or structs in your programming language of choice. This saves hours of manual boilerplate coding and reduces type errors when working with APIs and data serialization.

We support 11 variants across 10 languages: TypeScript (interface & class), Java, C#, Python (dataclass), Go, Swift, Kotlin, Dart, PHP, and Rust. Each generator follows language-specific idioms and best practices for clean, production-ready code.

The tool recursively analyzes your JSON structure. Nested objects become separate classes with proper references. Arrays of objects are detected and their element types are inferred. Integer vs. float numbers are distinguished, and null values are marked as optional/nullable types where the language supports it.

Yes! You can choose between camelCase, PascalCase, and snake_case for your property names. Class names always follow PascalCase (or snake_case for Python if selected). The tool also automatically sanitizes invalid identifier characters in JSON keys.

Absolutely. This JSON to Code Snippets generator is completely free with no registration required. Paste your JSON, instantly get model classes, copy or download the code — all processed locally in your browser for privacy and speed.

The tool handles deeply nested structures gracefully, generating separate classes for each nested object level. For extremely large JSON files (thousands of lines), we recommend validating your JSON first. The generator processes everything client-side with no data sent to any server.

When an array contains elements of different types, the tool uses a union type or the most general compatible type (e.g., any in TypeScript, Object in Java, dynamic in Dart). For arrays with consistent object elements, a dedicated class is generated for the array item type.