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The file_picker_web package provides a web platform implementation for the file_picker plugin, enabling users to select files via the browser interface. It supports streaming file data directly from the browser and loading files into the application with ease. Designed for seamless integration in Flutter web apps, it ensures consistent file handling across different browsers. The package is part of the broader file_picker ecosystem and focuses on web-specific functionality like file input handling and stream-based reading.
Use cases
Web-based file uploads
Streaming file content without full download
Integrating file selection in web forms
Loading files for processing or preview
Supporting multiple file types in web apps
Key features
Browser file selection
File streaming support
Cross-browser compatibility
Lightweight web integration
Simple API for file loading
Suitable for
Flutter web applications needing file input
Apps requiring real-time file streaming
Developers using the file_picker plugin on web
Projects involving file previews or uploads
Web apps targeting desktop and mobile browsers
Considerations
Requires file_picker core package
Limited to web platform
May require browser permission handling
Depends on browser's file input capabilities
No native file system access
Original README
Original README snapshot from the linked source repository. Visit the repository for the latest content.
File Picker
A Flutter plugin that lets you use the native file explorer to pick single or multiple files, with extension filtering, directory selection, and save-file dialogs, across Android, iOS, Linux, macOS, Windows, and Web.
This repository is a Melos workspace hosting file_picker as a federated plugin: a single cross-platform API package on top of one implementation package per platform, all versioned and published independently.
Web implementation, including Wasm compilation support.
Almost all apps should only ever depend on file_picker directly. The platform packages are pulled in transitively and registered automatically by Flutter's plugin system; you only reach for one of them directly if you need a platform-specific API that isn't exposed on the shared facade (for example FilePickerDarwin.skipEntitlementsChecks() on macOS).
Quick start
dependencies:file_picker:^13.0.0
import'package:file_picker/file_picker.dart';
final file = awaitFilePicker.pickFile();
if (file != null) {
print(file.name);
print(await file.length()); // Returns Future<int?> (or use file.lengthSync())
}
See packages/file_picker/README.md for the full feature list, platform compatibility chart, and more usage examples (multiple files, extension filters, directory picking, save-file dialogs).
Migration
Upgrading to v13? See the Migrating to v13 Guide for details on PlatformFile.length() returning Future<int?> and the removal of legacy v12-deprecated parameters.
Upgrading from pre-v12? See the Migrating to v12 Guide for the federated architecture changes (FilePicker.pickFiles() returning List<PlatformFile>, platform options, and streaming).
Contributions are welcome. Please read CONTRIBUTING.md before opening a pull request, it covers testing requirements, versioning, and changelog conventions for this workspace.
To work on this repository locally:
dart pub global activate melos
melos bootstrap
melos run analyze # flutter analyze across every package
melos run test# flutter test across every package
Each package keeps its own pubspec.yaml and CHANGELOG.md and is released independently, only the package(s) you actually changed need a version bump.
Credits
file_picker was created and maintained by Miguel Ruivo, starting in 2018, growing it from a single Android/iOS plugin into the federated, cross-platform package it is today. This repository continues that work under new ownership, built entirely on the foundation of his years of effort.
Thank you, Miguel.
License
MIT, see LICENSE. Every package in this repository is released under the same license.