JsonConstructorAttribute When placed on a constructor, indicates that the constructor should be used to create instances of the type on deserialization.

 JsonConverterAttribute When placed on a property, field, or type, specifies the converter type to use.

 JsonDerivedTypeAttribute When placed on a type declaration, indicates that the specified subtype should be opted into polymorphic serialization.

 JsonExtensionDataAttribute When placed on a property or field of type or , any properties that do not have a matching property or field are added during deserialization and written during serialization.

 JsonIgnoreAttribute Prevents a property or field from being serialized or deserialized.

 JsonIncludeAttribute Indicates that the property or field should be included for serialization and deserialization.

 JsonNumberHandlingAttribute When placed on a type, property, or field, indicates what settings should be used when serializing or deserializing numbers.

 JsonPolymorphicAttribute When placed on a type, indicates that the type should be serialized polymorphically.

 JsonPropertyNameAttribute Specifies the property name that is present in the JSON when serializing and deserializing. This overrides any naming policy specified by .

 JsonPropertyOrderAttribute Specifies the property order that is present in the JSON when serializing. Lower values are serialized first. If the attribute is not specified, the default value is 0.

 JsonRequiredAttribute Indicates that the annotated member must bind to a JSON property on deserialization.

 JsonSerializableAttribute Instructs the System.Text.Json source generator to generate source code to help optimize performance when serializing and deserializing instances of the specified type and types in its object graph.

 JsonSourceGenerationOptionsAttribute Instructs the System.Text.Json source generator to assume the specified options will be used at run time via .

 JsonStringEnumConverter Converter to convert enums to and from strings.

 ReferenceHandler`1 This class defines how the deals with references on serialization and deserialization.

 JsonIgnoreCondition When specified on , determines when properties and fields across the type graph are ignored. When specified on , controls whether a property or field is ignored during serialization and deserialization. This option overrides the setting on .

 JsonKnownNamingPolicy The to be used at run time.

 JsonNumberHandling Determines how handles numbers when serializing and deserializing. The behavior of and is not defined by the JSON specification. Altering the default number handling can potentially produce JSON that cannot be parsed by other JSON implementations.

 JsonSourceGenerationMode The generation mode for the System.Text.Json source generator.

 JsonUnknownDerivedTypeHandling Defines how objects of a derived runtime type that has not been explicitly declared for polymorphic serialization should be handled.

 JsonUnknownTypeHandling Defines how deserializing a type declared as an is handled during deserialization.

 JsonAttribute The base class of serialization attributes.

 JsonConverter Converts an object or value to or from JSON.

 JsonConverter`1 Converts an object or value to or from JSON.

 JsonConverterFactory Supports converting several types by using a factory pattern.

 JsonSerializerContext Provides metadata about a set of types that is relevant to JSON serialization.

 ReferenceHandler This class defines how the deals with references on serialization and deserialization.

 ReferenceResolver This class defines how the deals with references on serialization and deserialization. Defines the core behavior of preserving references on serialization and deserialization.

 IJsonOnDeserialized Specifies that the JSON type should have its method called after deserialization occurs.

 IJsonOnDeserializing Specifies that the type should have its method called before deserialization occurs.

 IJsonOnSerialized Specifies that the type should have its method called after serialization occurs.

 IJsonOnSerializing Specifies that the type should have its method called before serialization occurs.