jamesnk/newtonsoft.json

★ 11,295C#Audience · developerComplexity · 2/5Setup · easy

Mindmap

mindmap
  root((Json.NET))
    What it does
      Object to JSON
      JSON to object
      .NET integration
    Tech stack
      C sharp
      .NET runtime
      NuGet package
    Use cases
      API responses
      Config files
      Data exchange
    Ecosystem
      Billions of downloads
      System.Text.Json alternative

mindmap root((Json.NET)) What it does Object to JSON JSON to object .NET integration Tech stack C sharp .NET runtime NuGet package Use cases API responses Config files Data exchange Ecosystem Billions of downloads System.Text.Json alternative

Click or tap to explore — scroll the page freely

Things people build with this

USE CASE 1

Serialize a C# object to a JSON string for sending in an API response or saving to a file.

USE CASE 2

Parse a JSON payload from an external API into a typed C# model class.

USE CASE 3

Add JSON handling to an existing .NET project in seconds via a single NuGet install.

Tech stack

C#.NETNuGet

Getting it running

Difficulty · easy Time to first run · 5min

Available as open source, full license details are on the linked documentation site.

In plain English

Json.NET, distributed as the NuGet package Newtonsoft.Json, is a library for working with JSON data in .NET applications. JSON is a widely used text format for exchanging data between programs, such as between a server and a client app. This library gives .NET developers tools to convert objects from their code into JSON text and to parse JSON text back into usable .NET objects. The README for this repository is very sparse. It contains only a short list of links pointing to external resources: the project homepage, documentation site, NuGet package page, release notes, contributing guidelines, and a Stack Overflow tag. No feature descriptions, code examples, or installation instructions appear in the README itself. All of that detail lives in the linked documentation. The repository description calls it a high-performance JSON framework, and with over eleven thousand stars on GitHub and billions of NuGet downloads, it is one of the most widely installed libraries in the .NET ecosystem. It has been a standard choice for JSON handling in .NET projects for many years. Microsoft later introduced a built-in alternative called System.Text.Json in .NET Core 3.0, but Newtonsoft.Json remains in active use across a large number of existing projects. The library is maintained by James Newton-King and is available as open source. For actual usage documentation, the linked homepage and docs site are the right starting points.

Copy-paste prompts

Prompt 1

Using Newtonsoft.Json in C#, how do I serialize a list of objects to a JSON string and write it to a file?

Prompt 2

How do I deserialize a nested JSON API response into a C# class hierarchy using Newtonsoft.Json?

Prompt 3

What are the main differences between Newtonsoft.Json and System.Text.Json, and when should I still use Newtonsoft?

Prompt 4

Show me how to handle missing or null fields gracefully when deserializing JSON with Newtonsoft.Json.

Open on GitHub → Explain another repo

← jamesnk on gitmyhub — every repo by this author, as a profile.

Verify against the repo before relying on details.