Anybody who's done a little bit of graphic design takes pride in being able to spot the dimensions of an image. But how good are you really? Pixactly, "an online tool that tests how well you know your pixels," will now show you in five easy rounds.
The challenge is simple. Pixactly presents a pair of dimensions, say 130 pixels wide by 215 pixels tall, and you have to draw a box that's those same dimensions. The closer you get, the higher your score. After five rounds, you get a grand total, and a blunt summary of your ability to think like a computer. How good is your eye? [Pixactly via BoingBoing]