Converters

C# Class to JSON Converter

Generate sample JSON from C# classes, including nested classes, dictionaries, and lists.

Nested classes Dictionary support POCO friendly

How the C# Class to JSON Converter Works

The ByteKiln C# to JSON converter reads your class definition and generates a representative JSON object with inferred sample values for each property. All processing happens in your browser — your code is never uploaded.

How are values inferred?

Each .NET type gets a sensible placeholder: strings become "sample", integers become 0, booleans become false, DateTimes become an ISO timestamp, and Guids become a sample UUID string.

Nested and collection types

Known nested class types are recursively expanded into nested JSON objects. List<T> and arrays are represented as single-element arrays containing one instance of the inner type.

When to use this tool

Use it to generate example payloads for API documentation, Postman collections, or README examples — without manually writing JSON for every property in your model.

FAQ

Short answers for the things developers usually ask before trusting a tool.

Does the ByteKiln C# to JSON converter support nested classes?

Yes. Known nested types are recursively expanded into example objects. Collections like List<T> and arrays become sample JSON arrays with one representative element.

Is this a replacement for JSON serialization at runtime?

No. The tool generates example JSON payloads based on your class structure. It is a design and documentation aid, not a runtime serializer like System.Text.Json or Newtonsoft.Json.

What property types does it recognize?

It maps common .NET types: string, int, long, double, decimal, bool, DateTime, Guid, and nullable variants. Unknown types are represented as empty objects.

Does my C# code get uploaded?

No. The converter runs entirely in your browser. Your class definitions never leave your device and are never stored or transmitted.

Can I use this for API documentation?

Yes. Paste your request or response model and the tool produces a representative JSON example you can include in API specs, README files, or Postman collections.

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