jsonpost
Code Generation

JSON to Python Dataclass / Pydantic Generator

Generate Python dataclasses or Pydantic models with correct type hints from JSON samples.

Runs entirely in your browser — your data never leaves your device.

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How to use this tool

  1. 1Paste a sample JSON response into the editor.
  2. 2Choose dataclass or Pydantic output.
  3. 3Copy the generated Python models.

Frequently asked questions

Dataclasses or Pydantic?
The generator can produce typed Python classes suitable for dataclasses or Pydantic validation models with accurate type hints.
Does it infer optional fields?
Yes. Fields that may be missing or null are typed as Optional where appropriate.
Is my data uploaded to a server?
No. Every tool on JSONPost runs entirely in your browser using JavaScript. Your JSON never leaves your device, so it is safe to use with private or sensitive data.

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