In the current image_picker implementation, the only way to get the size of the file is to read the bytes. This is inefficient and unnecessary for cases when the size is used as part of a confirmation dialogue before reading the file.

https://pub.dev/documentation/image_picker_platform_interface/latest/image_picker_platform_interface/PickedFile-class.html

https://api.dart.dev/stable/2.8.4/dart-io/File/length.html