Is there a non-hacky way to prevent pinch zoom on iOS 11.3 Safari?

Question

I really want to disable pinch to zoom on my webpages (iframes) and use finger pinching events for another custom interaction. So while Apple in their documentation

Answer 1

While there isn't a non-hacky way to prevent pinchzoom, there is a hack that works on iOS 11.3 Safari still. At least for now. See inobounce that handles both rubber band behavior and pinchzoom in one fell sweep.