There has been a proliferation of sites constructing previews of other sites by parsing them, sometimes for a representative image, sometimes for special markup. At the same time, smart websites have been redesigning their layout to be responsive to different screen sizes. Finally, more and more browsing device have very high dpi (aka Retina™ displays).
What if we use the site itself, in an iframe, as a preview? This is a hacky attempt to see if this can work.