You can zoom most web pages by holding the Control (CTRL) key and rolling the mouse's scroll wheel (desktop PC terms, adapt as needed), resolution will suffer, though. Even better, I discovered that the small pictures in the media section are often much larger when I "save image" to my PC (Windows PC: right-click image, click "Save image as...". Many of the pictures in the media section are greatly reduced in size but are restored to original size when saved to PC, original resolution is maintained. This also works on other websites (some, not all).