JSON to Python Generator
Generate Python dataclasses with type annotations from JSON data automatically.
Drop .json file here or click to upload
0 chars
0 chars
Python code generated!
Key Features
Instant Generation
Generate Python code from JSON instantly. No server roundtrips, no waiting.
100% Private
All processing happens locally in your browser. Your data never leaves your device.
Nested Types
Automatically generates nested type definitions for complex JSON structures.
Copy & Download
One-click copy to clipboard or download as a .py file.
Frequently Asked Questions
How does the Python generator work?
Simply paste your JSON data in the left panel and click Generate. The tool analyzes your JSON structure and creates typed Python definitions for all objects, arrays, and primitive values. Nested objects are automatically converted to nested type definitions.
Is my JSON data safe?
Yes, 100%. All code generation is performed client-side in your browser. Your JSON data never leaves your device or touches any server.
How are nested objects handled?
Nested JSON objects are automatically converted to separate named type/class definitions. The generator creates unique names based on the property keys and links them together through typed references.
What types are used for JSON values?
Strings become string/str, numbers become number/int/float64 (int if whole number), booleans become boolean/bool, null becomes optional types, arrays are typed with their element type, and objects become nested class/interface definitions.
Can I use this for API response types?
Yes! Paste any JSON API response to automatically generate typed client code. This is especially useful when working with REST APIs, GraphQL responses, or any JSON-based data source where you need strongly-typed models.