in HTML5 the iframe has new attributes like \'seamless\' that should remove borders and scrollbars. I\'ve tried it but doesn\'t seem to work, I still can see scrollbars and
I couldn't find anything that met my requirements, hece I came up with this script (depends on jQuery):
https://gist.github.com/invernizzie/95182de86ea9dc5daa80
It will resize the iframe to the viewport size (taking into account wider content). It could use an improvement to use the viewport height instead of the content height, in the case that the former is bigger.