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Code Generation

JSON to C# Class Generator

Convert JSON into C# classes with properties and System.Text.Json / Newtonsoft attributes.

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

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How to use this tool

  1. 1Paste your JSON sample into the editor.
  2. 2Set the root class name.
  3. 3Copy the generated C# classes.

Frequently asked questions

Which serializer does it target?
The output works with System.Text.Json and Newtonsoft.Json, the two most common .NET JSON libraries.
Does it handle nested objects?
Yes. Nested JSON objects generate their own C# classes with correctly typed properties.
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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