> Besides, you don't want the screen size, you want the viewport size and the DPI. ...I can think of at least one case where you really would want the screen s

> Besides, you don't want the screen size, you want the viewport size and the DPI. ...I can think of at least one case where you really would want the screen size, although perhaps it's specialized enough to warrant a separate API. As a user, I have often wished there was a reliable way to view an image on the web at "actual size". Examples would include purchasing band-aids on Amazon, or reading a Wikipedia article about insects. As far as I know, there's currently no good way for websites to offer this, and there really should be!