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 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 of type , any properties that do not have a matching member are added to that dictionary during deserialization and written during serialization.

 JsonIgnoreAttribute Prevents a property from being serialized or deserialized.

 JsonIncludeAttribute Indicates that the member should be included for serialization and deserialization.

 JsonNumberEnumConverter`1 Converter to convert enums to and from numeric values.

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

 JsonObjectCreationHandlingAttribute Determines how deserialization handles object creation for fields or properties.

 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.

 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 Converts enumeration values to and from strings.

 JsonStringEnumConverter`1 Converter to convert enums to and from strings.

 JsonStringEnumMemberNameAttribute

 JsonUnmappedMemberHandlingAttribute When placed on a type, determines the configuration for the specific type, overriding the global setting.

 ReferenceHandler`1 Defines how the deals with references on serialization and deserialization.

 JsonIgnoreCondition Controls how the ignores properties on serialization and deserialization.

 JsonKnownNamingPolicy The to be used at run time.

 JsonKnownReferenceHandler

 JsonNumberHandling Determines how handles numbers when serializing and deserializing.

 JsonObjectCreationHandling Determines how deserialization will handle object creation for fields or properties.

 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.

 JsonUnmappedMemberHandling Determines how handles JSON properties that cannot be mapped to a specific .NET member when deserializing object types.

 JsonAttribute Provides the base class for 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 Defines how the deals with references on serialization and deserialization.

 ReferenceResolver 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.