Free Online JSON to C# Class - ATools

Free online JSON to C# Class generator: generate C# classes and properties from sample JSON (supports JsonPropertyName/nullable), runs purely locally in your browser.

View source on GitHub

Root Type NameArray TypeJsonPropertyNameNullable Reference Types

JSON Input

Note: Mixed types or mixed arrays will fall back to object; missing fields or null values will generate nullable types.

C# Output

using System;
using System.CollectionsGeneric;
using System.Text.Json.Serialization;

public class AutoGeneratedProfile
{
  [JsonPropertyName("email")]
  public string Email { get; set; } = default!;
}

public class AutoGenerated
{
  [JsonPropertyName("id")]
  public long Id { get; set; }
  [JsonPropertyName("name")]
  public string Name { get; set; } = default!;
  [JsonPropertyName("profile")]
  public AutoGeneratedProfile Profile { get; set; } = default!;
  [JsonPropertyName("tags")]
  public List<string> Tags { get; set; } = new();
}