# TransferRepresentation A declarative description of the process of importing and exporting a transferable item. ``` protocol TransferRepresentation : Sendable ``` ## Overview Combine multiple existing transfer representations to compose a single transfer representation that describes how to transfer an item in multiple scenarios. The following shows a `Greeting` type that transfers both as a `Codable` type and by proxy through its `message` string. ``` import UniformTypeIdentifiers struct Greeting: Codable, Transferable { let message: String var displayInAllCaps: Bool = false static var transferRepresentation: some TransferRepresentation { CodableRepresentation(contentType: .greeting) ProxyRepresentation(exporting: \.message) } } extension UTType { static let greeting = UTType(exportedAs: "com.example.greeting") } ``` ## Topics ### Implementing a transfer representation [`body`](/documentation/CoreTransferable/TransferRepresentation/body-swift.property) A builder expression that describes the process of importing and exporting an item. [`Body`](/documentation/CoreTransferable/TransferRepresentation/Body-swift.associatedtype) The transfer representation for the item. [`Item`](/documentation/CoreTransferable/TransferRepresentation/Item) The type of the item that’s being transferred. ### Configuring exports [`exportingCondition(_:)`](/documentation/CoreTransferable/TransferRepresentation/exportingCondition(_:)) Prevents the system from exporting an item if it does not meet the supplied condition. ### Controlling visibility [`visibility(_:)`](/documentation/CoreTransferable/TransferRepresentation/visibility(_:)) Specifies the kinds of apps and processes that can see an item in transit. ## Relationships ### Conforming Types [`TupleTransferRepresentation`](/documentation/CoreTransferable/TupleTransferRepresentation) [`CodableRepresentation`](/documentation/CoreTransferable/CodableRepresentation) [`DataRepresentation`](/documentation/CoreTransferable/DataRepresentation) [`FileRepresentation`](/documentation/CoreTransferable/FileRepresentation) [`ProxyRepresentation`](/documentation/CoreTransferable/ProxyRepresentation) ### Inherits From [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`Sendable`](/documentation/Swift/Sendable) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)