Json.NET

Popular high-performance JSON framework for .NET

Version 9.0.1 - Tweet

Product product = new Product();
product.Name = "Apple";
product.Expiry = new DateTime(2008, 12, 28);
product.Sizes = new string[] { "Small" };

string json = JsonConvert.SerializeObject(product);
// {
//   "Name": "Apple",
//   "Expiry": "2008-12-28T00:00:00",
//   "Sizes": [
//     "Small"
//   ]
// }

Serialize JSON

string json = @"{
  'Name': 'Bad Boys',
  'ReleaseDate': '1995-4-7T00:00:00',
  'Genres': [
    'Action',
    'Comedy'
  ]
}";

Movie m = JsonConvert.DeserializeObject<Movie>(json);

string name = m.Name;
// Bad Boys

Deserialize JSON

JArray array = new JArray();
array.Add("Manual text");
array.Add(new DateTime(2000, 5, 23));

JObject o = new JObject();
o["MyArray"] = array;

string json = o.ToString();
// {
//   "MyArray": [
//     "Manual text",
//     "2000-05-23T00:00:00"
//   ]
// }

LINQ to JSON

World-class JSON Serializer

Serialize and deserialize any .NET object with Json.NET's powerful JSON serializer.

LINQ to JSON

Create, parse, query and modify JSON using Json.NET's JObject, JArray and JValue objects.

JSON Path

Query JSON with an XPath-like syntax. Find out more about JSON Path here.

High Performance

50% faster than DataContractJsonSerializer, and 250% faster than JavaScriptSerializer.

Easy To Use

Json.NET makes the simple easy and the complex possible.

XML Support

If you need it, Json.NET supports converting between XML and JSON.

Open Source

Json.NET is open source software and is completely free for commercial use.

Run Anywhere

Json.NET supports Windows, Windows Store, Windows Phone, Mono, and Xamarin.

Most Popular .NET library

Over 15 million downloads and counting, Json.NET is the number one library on NuGet.

Json.NET Documentation

Json.NET documentation is the first place to go for help. It includes 100 code samples.

Commercial Support

Json.NET with confidence. Expert support, code reviews, security bulletins, nightly builds and more.

Json.NET is open source under the MIT license and is free for commercial use.

Json.NET is a personal open source project. Started in 2006, thousands of hours have been invested in refining and tuning Json.NET with the goal of making it not just the best JSON serializer for .NET but the best serializer for any computer language.

If Json.NET has been helpful to you, consider donating.

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Donate

Thanks to Object.NET for use of the json.net domain name, AppVeyor for a CI service, and Allie Brosh for all the things.

70 Json.NET

26 DataContractJsonSerializer

12 JavaScriptSerializer

	Json.NET	DataContractJsonSerializer	JavaScriptSerializer
Supports JSON
Supports BSON
Supports JSONPath
Supports .NET 2.0
Supports .NET 3.5
Supports .NET 4.0
Supports .NET 4.5
Supports Silverlight
Supports Windows Phone
Supports Windows Store
Supports Xamarin
Open Source
MIT License
LINQ to JSON
Thread Safe
XPath-like JSON query syntax
Indented JSON support
Efficient dictionary serialization
Nonsensical dictionary serialization
Deserializes IList, IEnumerable, ICollection, IDictionary properties
Serializes circular references
Supports serializing objects by reference
Deserializes polymorphic properties and collections
Supports including type names with JSON
Globally customize serialization process
Supports excluding null values when serializing
Supports SerializationBinder
Conditional property serialization
Includes line number information in errors
Converts XML to JSON and JSON to XML
Camel case JSON property names
Non-default constructors support
Serialization error handling
Supports populating an existing object
Efficiently serializes byte arrays as base64 text
Handles NaN, Infinity, -Infinity and undefined
Handles JavaScript constructors
Serializes .NET 4.0 dynamic objects
Serializes ISerializable objects
Supports serializing enums to their text name
JSON recursion limit support
Attribute property name customization
Attribute property order customization
Attribute property required customization
Supports ISO8601 dates
Supports JavaScript constructor dates
Supports Microsoft AJAX dates
Unquoted property names support
Raw JSON support
Supports reading and writing comments
Deserializes anonymous types
Opt-in property serialization
Opt-out property serialization
Efficiently stream reading and writing JSON
Single or double quote JSON content
Supports overriding a type's serialization
Supports OnDeserialized, OnSerializing, OnSerialized and OnDeserializing attributes
Supports serializing private properties
DataMember attribute support
MetdataType attribute support
DefaultValue attribute support
Serializes DataSets and DataTables
Serailizes Entity Framework
Serializes nHibernate
Case-insensitive property deserialization
Diagnostic tracing
Serializes read-only and immutable collections
Supports serialization extension data
Serializes F# discriminated unions
Serializes F# collections
Supports merging JSON

Json.NET

World-class JSON Serializer

LINQ to JSON

JSON Path

High Performance

Easy To Use

XML Support

Open Source

Run Anywhere

Most Popular .NET library

Help

Json.NET Documentation

Commercial Support

Licensing

Donate

Thanks to these recent Json.NET donors...

Thanks

Feature Comparison

Performance Comparison