Overview
File Saver is a cross-platform Flutter package that enables saving files from bytes, file paths, streams, or URLs to the device's storage. It supports all major platforms including Android, iOS, Web, macOS, Windows, and Linux, making it ideal for applications requiring file export or download functionality. The package simplifies file handling with a consistent API across platforms, ensuring reliable file persistence regardless of the target environment. It’s particularly useful in apps that generate or process documents, images, or other data files.
Use cases
- Exporting generated documents
- Saving images or media files
- Downloading files from URLs
- Handling file streams
- Cross-platform file persistence
Key features
- Supports multiple input types (bytes, paths, streams, URLs)
- Cross-platform compatibility
- Simple and consistent API
- Works on mobile, desktop, and web
- Handles file encoding and MIME types
- Built-in error handling
Suitable for
- Apps needing file export
- Data-driven applications
- Media or document management tools
- Web and desktop Flutter apps
- Developers targeting multiple platforms
Considerations
- Requires platform-specific permissions on Android/iOS
- May need additional configuration for web
- File size limits depend on platform
- Not suitable for large-scale file operations
- Limited customization for file naming or location