# fileExporter(isPresented:document:contentType:defaultFilename:onCompletion:) Presents a system dialog for exporting a document that’s stored in a value type, like a structure, to a file on disk. ``` nonisolated func fileExporter(isPresented: Binding, document: D?, contentType: UTType, defaultFilename: String? = nil, onCompletion: @escaping (Result) -> Void) -> some View where D : FileDocument ``` ## Parameters `isPresented` A binding to whether the dialog should be shown. `document` The in-memory document to export. `contentType` The content type to use for the exported file. `defaultFilename` If provided, the default name to use for the exported file, which the user will have an opportunity to edit prior to the export. `onCompletion` A callback that will be invoked when the operation has succeeded or failed. - result: A `Result` indicating whether the operation succeeded or failed. ## Discussion In order for the dialog to appear, both `isPresented` must be `true` and `document` must not be `nil`. When the operation is finished, `isPresented` will be set to `false` before `onCompletion` is called. If the user cancels the operation, `isPresented` will be set to `false` and `onCompletion` will not be called. The `contentType` provided must be included within the document type’s `writableContentTypes`, otherwise the first valid writable content type will be used instead. For example, a button that exports a text document might look like this: ``` struct ExportButton: View { @State private var isExporterPresented = false var document: TextFile? var body: some View { Button("Export") { isExporterPresented = true } .fileExporter( isPresented: $isExporterPresented, document: document, contentType: .utf8PlainText, defaultFilename: "Exported Document" ) { result in switch result { case .success(let url): print("Saved to \(url)") case .failure(let error): print(error) } } } } ``` To further configure the dialog’s appearance and behavior, use these view modifiers: `fileDialogDefaultDirectory(_:)`, `fileDialogConfirmationLabel(_:)`, `fileDialogMessage(_:)`, `fileDialogBrowserOptions(_:)`, `fileExporterFilenameLabel(_:)`, and `fileDialogCustomizationID(_:)`. --- 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)