What size should an application icon and menu bar icon for OS X be?
I can deal with small resolution displays but what about Retina – does an icon displayed on the menu bar (e.g. 20 x 20 ) will be smaller or blurred on a new MacBook Pro with Retina display?
I reckon that the Application icon will be scaled, so if I'll prepare twice larger than regular it should be OK on Retina.
I found an excellent guide for iOS development with sizes specification but I can't find similar size specifications for OS X.
Best Answer
NSStatusBar icons (i.e. Menu bar icons) are different from regular app icons. I have not been able to find an NSStatusBar official icon guideline, but I have to believe that the Toolbar Icon guideline for buttons is pretty close. It suggests:
In testing, I've found:
Code sample: