JSON Formatter for C#
Free online json formatter with C# code examples
Working with json formatter in C#? Our free online json formatter helps C# developers format, validate, and process data instantly. Below you will find C# code examples using System.Text.Json (built-in) so you can achieve the same result programmatically in your own projects.
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Open JSON FormatterC# Code Example
using System.Text.Json;
string json = "{\"name\":\"Alice\",\"age\":30}";
var options = new JsonSerializerOptions { WriteIndented = true };
var doc = JsonDocument.Parse(json);
string formatted = JsonSerializer.Serialize(doc, options);
Console.WriteLine(formatted);Quick Setup
Library: System.Text.Json (built-in)
// Built-in in .NET Core 3.0+ — no package neededC# Tips & Best Practices
- Use JsonSerializerOptions { WriteIndented = true } for formatting
- Newtonsoft.Json is an alternative with more features
- JsonDocument is read-only; use JsonNode for modifications