# withExportedFile(contentType:fileHandler:) Using the type’s `Transferable` conformance implementation, exports a value by writing it to disk and removes when not needed. ``` func withExportedFile(contentType: UTType?, fileHandler: (URL) async throws -> Result) async throws -> Result ``` ## Parameters `contentType` A content type of the requested file. If the content type is not provided, CoreTransferable creates a file from the first `TransferRepresentation` that supports export. `fileHandler` A closure that accepts a file URL as a parameter. The file is written to a temporary destination and removed after the closure returns. ## Discussion This converts a [`Transferable`](/documentation/CoreTransferable/Transferable) item into a temporary file, and removes it after `fileHandler` closure returns. The default implementation of this function is available to all types that conform to `Transferable` protocol. --- 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)