What is JSON Code Generator?
JsonStudio's code generator converts JSON data into type-safe code in your preferred programming language. Instead of manually writing interfaces, structs, or classes, simply paste your JSON and get production-ready code instantly.
Supported Programming Languages
TypeScript
Generate TypeScript interfaces with proper types and optional fields.
Go
Generate Go structs with JSON tags and proper field types.
Rust
Generate Rust structs with serde annotations for serialization.
Python
Generate Python dataclasses with type hints and default values.
Java
Generate Java classes with getters, setters, and Jackson annotations.
C#, Swift, Kotlin
Also supports C#, Swift, Kotlin, and more languages.
Why Use JsonStudio Code Generator?
Instant Generation
Generate code in milliseconds, no waiting.
Type-Safe
Generated code includes proper types, nullability, and annotations.
Reverse Conversion
Paste code to extract JSON structure — a unique feature!
Syntax Highlighting
Generated code has proper syntax highlighting for easy reading.
One-Click Copy
Copy generated code to clipboard instantly.
Complete Privacy
All generation happens locally, your data never leaves your machine.
Offline
Works without internet connection.
No Ads
Clean, focused interface.
How to Generate Code from JSON
- Download and install JsonStudio from GitHub Releases
- Open the Code Gen tool from the left sidebar
- Paste your JSON data (or load from file)
- Select target language – TypeScript, Go, Rust, Python, Java, etc.
- Click Generate – code appears instantly with syntax highlighting
- Copy the generated code and use it in your project
Code Generation Examples
JSON to TypeScript
Input JSON:
{"name": "John", "age": 30, "email": "john@example.com"}
Generated TypeScript:
interface User { name: string; age: number; email: string; }
JSON to Go
Generated Go struct:
type User struct { Name string `json:"name"`; Age int `json:"age"`; Email string `json:"email"` }
JSON to Rust
Generated Rust struct:
#[derive(Serialize, Deserialize)] struct User { name: String, age: i32, email: String }
Code Generator vs Online Tools
Here's why JsonStudio's code generator is better than online alternatives:
- Performance: Online generators struggle with large JSON. JsonStudio handles complex nested structures instantly.
- Privacy: Online tools upload your data to their servers. JsonStudio processes everything locally.
- Reverse conversion: JsonStudio uniquely supports pasting code to extract JSON structure.
- More languages: Supports 10+ languages with proper idioms and conventions for each.
- Better quality: Generated code follows best practices and naming conventions for each language.
Frequently Asked Questions
Is JsonStudio code generator free?
Yes, JsonStudio is completely free and open source (MIT License). All code generation features are included.
What languages are supported?
JsonStudio supports TypeScript, JavaScript, Go, Rust, Python, Java, C#, Swift, Kotlin, and more.
Can I customize the generated code?
Yes, you can edit the generated code directly in the editor before copying it to your project.
Does it handle nested JSON?
Yes, JsonStudio correctly handles nested objects and arrays, generating appropriate nested types or structs.
Can I convert code back to JSON?
Yes, JsonStudio supports reverse conversion. Paste TypeScript/Go/Rust code and extract the JSON structure.