getMapBytesFromUrl static method
final bitmapDescriptor = BitmapDescriptor.fromBytes(await _getBytesFromUrl('https://example.com/your-marker-image.png'));
Implementation
static Future<Uint8List> getMapBytesFromUrl(String url) async {
final response = await http.get(Uri.parse(url));
final bytes = response.bodyBytes;
final imageCodec = await ui.instantiateImageCodec(bytes, targetWidth: 150); // Resize the image
final frame = await imageCodec.getNextFrame();
final data = await frame.image.toByteData(format: ui.ImageByteFormat.png);
return data!.buffer.asUint8List();
}