image_downloader_web

Package Overview

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A Flutter plugin designed specifically for web applications, enabling users to download images from a URL directly to their device. It integrates seamlessly with Flutter's web platform, providing a simple API to trigger downloads without requiring native code. The plugin is ideal for web-based apps that display or generate images and need to offer a 'save image' functionality. It supports standard web browsers and relies on browser-native download mechanisms.

Use cases

Downloading user-generated images
Saving profile pictures from URLs
Exporting visual content from web apps
Enabling offline access to images
Integrating image export in web dashboards

Key features

Web-only compatibility
Simple URL-based download
Browser-native download integration
No additional permissions required
Lightweight and easy to implement

Suitable for

Web-based image galleries
Educational web apps
E-commerce product image saving
Content management systems
Design tools with export features

Considerations

Only works on web platforms
Relies on browser download behavior
No progress tracking for large files
Limited customization of download dialog
Requires secure HTTPS URLs for most browsers

Original README

Original README snapshot from the linked source repository. Visit the repository for the latest content.

Image downloader for web

Download images from URL on Flutter Web

Download image on webb


const _url = "https://picsum.photos/200";

Future<void> _downloadImage() async {
  await WebImageDownloader.downloadImageFromWeb(_url);
}

Download image on web from UInt8List


final uint8List = Uint8List();

Future<void> _downloadImage() async {
  await WebImageDownloader.downloadImageFromUInt8List(uInt8List: uint8List);
}

Download image with reduced quality


const _url = "https://picsum.photos/200";

Future<void> _downloadImage() async {
  await WebImageDownloader.downloadImageFromWeb(_url, imageQuality: 0.5);
}

Download image with custom headers


const _url = "https://picsum.photos/200";

Future<void> _downloadImage() async {
  final Map<String, String> headers = {
    'authorization': token,
  };
  await WebImageDownloader.downloadImageFromWeb(_url, headers: headers);
}

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