
They found that reading speed is fastest when the text’s x-height is 0.3 degrees of arc. Chart from Does Print Size Matter for Reading? A Review of Findings from Vision Science and Typography A few years ago, a psychologist and a media researcher teamed up to review findings from vision science and typography to find out how text size affects reading speed and comprehension. Surprise! The iPhone resizes text when you turn it on its side! Science to the rescue!Ĭonveniently enough, vision is a topic of intense scientific interest. You can’t even count on that screen staying the same way up-it might be upright like a book page one moment, then laying longways the next, enlarging your text without asking. Thanks to responsive design, your web page might be read on a 4“ screen held in the hand, or on a 70” screen 12 feet away from the couch.



You could feel confident that your content would be decently readable on PC or Mac, Netscape or IE. Picking a font size for the web used to be really easy.
