flutter web load html
import 'dart:ui' as ui; import 'dart:html'; ui.platformViewRegistry.registerViewFactory( 'test-view-type', (int viewId) => IFrameElement() ..width = '640' ..height = '360' ..src = "https://www.youtube.com/embed/5VbAwhBBHsg" ..style.border = 'none'); //just an example if you know how to code then change then feel free to change the values