What Python version is required?

The generated code targets Python 3.10+ with modern type hint syntax using built-in generics (list[str] instead of List[str]).

Does it convert field names to snake_case?

Yes! JSON keys like 'firstName' are automatically converted to 'first_name' following Python's PEP 8 naming conventions.

Nested JSON objects generate separate dataclass definitions. Classes are ordered so dependencies appear first.

JSON & Data

Generate Python dataclasses from JSON

100% client-side processing

Ctrl+Enter to process

Input

OutputPython

Output will appear here...

Generate Python dataclasses from JSON. Runs 100% client-side — no data is sent to any server.

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