JSON to Python Class Generator
Generate Python dataclasses or Pydantic models from JSON, with type hints for nested objects, lists and optional values.
How it works
- 1
Paste or open your data
Paste text, drop a file onto the editor or click Open file. Load sample shows how the tool works.
- 2
Adjust the options
The result updates as you type. Change the options to get exactly the output you need.
- 3
Copy or download
Copy the result to the clipboard or download it as a file.
Why PixNudge
Nothing is uploaded
Your data is processed in your browser and never sent to a server, so API keys, tokens and customer data stay private.
Instant, even for large files
There is no round trip to a server: results appear as you type, and files of several megabytes are handled smoothly.
Exact numbers
Long numbers such as 64-bit IDs are kept exactly as written instead of being rounded.
Frequently asked questions
Dataclasses or Pydantic?
Dataclasses are generated by default and need no extra packages. Turn on Pydantic models to get classes based on pydantic.BaseModel, which validate the data when it is loaded.
Which Python version do I need?
The generated code uses type hints and dataclasses, which need Python 3.7 or newer.
How are optional fields typed?
Keys that are missing from some items or can be null are typed as Optional and default to None.