fix: Image sending

lib/utils/custom_image_resizer.dart

@@ -1,3 +1,6 @@
+import 'dart:typed_data';
+import 'dart:ui';
+
 import 'package:matrix/matrix.dart';
 import 'package:native_imaging/native_imaging.dart' as native;
 
@@ -6,8 +9,28 @@ Future<MatrixImageFileResizedResponse?> customImageResizer(
   await native.init();
   var nativeImg = await native.Image.loadEncoded(arguments.bytes);
 
+  try {
+    nativeImg = await native.Image.loadEncoded(arguments.bytes); // load on web
+  } on UnsupportedError {
+    // for the other platforms
+    final dartCodec = await instantiateImageCodec(arguments.bytes);
+    final dartFrame = await dartCodec.getNextFrame();
+    final rgbaData = await dartFrame.image.toByteData();
+    if (rgbaData == null) {
+      return null;
+    }
+    final rgba = Uint8List.view(
+        rgbaData.buffer, rgbaData.offsetInBytes, rgbaData.lengthInBytes);
+    dartFrame.image.dispose();
+    dartCodec.dispose();
+
+    nativeImg = native.Image.fromRGBA(
+        dartFrame.image.width, dartFrame.image.height, rgba);
+  }
+
   final width = nativeImg.width;
   final height = nativeImg.height;
+
   final max = arguments.maxDimension;
   if (width > max || height > max) {
     var w = max, h = max;