💻 JSON to Code Generator

Generate typed classes, structs, and data models from JSON in 8 programming languages.

🐍 Python 🔷 Go ☕ Java 🟣 C# 🟪 Kotlin 🍎 Swift 🦀 Rust 🐘 PHP
📂 Drag & drop a .json file here, or click to browse
JSON Input
Generated Code

Supported Languages

LanguageOutput FormatFeatures
Python@dataclassType hints, List/Optional types
Gostructjson tags, proper capitalization
JavaPOJOJackson @JsonProperty, getters/setters
C#classNewtonsoft.Json attributes, properties
Kotlindata classGson @SerializedName, val properties
SwiftCodable structCodingKeys enum, let properties
Ruststructserde derive macros, rename attributes
PHPclassTyped properties (8.0+), constructor

How It Works

  1. Paste your JSON object (not array)
  2. Select target programming language
  3. Optionally change the root class name
  4. Click Generate — nested objects become separate classes

Type Inference

The generator automatically infers types from values: strings, integers, floats, booleans, nulls, arrays, and nested objects. Arrays of objects generate separate item classes.