Capture a Flutter Widget as PNG and Download It — Web Share Card

Capture a Flutter Widget as PNG and Download It — Web Share Card I added a shareable card to my AI University feature. One tap generates a PNG showing "X out of Y providers learned" and downloads it to the user's device. Core technique : RepaintBoundary → toImage() → base64 → HTMLAnchorElement . The 5-Line Core import 'dart:convert' show base64Encode ; import 'dart:ui' as ui ; import 'package:web/web.dart' as web_api ; Future void > _captureAndDownload () async { final boundary = _shareCardKey .