On some webpages, image tooltips can contain important information. One example is the XKCD webcomic (where the tooltips are used for humorous captions for each comic), but there are others.
Is it possible to view these tooltips in IE on Windows Phone? And if so, how? Tap-and-hold on the image only shows options to save or share it. On a PC tooltips appear when you hover over an image with the mouse cursor, but of course that doesn't work on a touch-based device.