Download Folder |top| — Flutter Web Save File To

If you want to let the user choose a specific location (rather than just defaulting to Downloads), use the file_picker package . Its saveFile() method opens a native file dialog on supported browsers.

import 'package:file_saver/file_saver.dart'; void downloadFile(Uint8List bytes, String fileName) async { await FileSaver.instance.saveFile( name: fileName, bytes: bytes, ext: 'pdf', // Change to your extension mimeType: MimeType.pdf, ); } Use code with caution. Method 2: Native Implementation (No Extra Packages) flutter web save file to download folder

: The methods above work for both files fetched from a URL (as bytes) and data generated dynamically in your app (like a CSV or PDF). If you want to let the user choose

import 'package:file_picker/file_picker.dart'; Future userChoosesWhereToSave(Uint8List bytes) async { String? outputFile = await FilePicker.platform.saveFile( fileName: 'my_report.csv', ); if (outputFile != null) { // Note: On Web, the browser handles the actual writing after // the user confirms the dialog. } } Use code with caution. Critical Web Considerations Method 2: Native Implementation (No Extra Packages) :

The most common way to "save" a file in Flutter web is by programmatically creating a hidden HTML anchor ( ) element with a download attribute and simulating a user click. Method 1: Using the file_saver Package (Recommended)

How to save and download text file in Flutter web application