Icons on iOS and OS X

Sometime I need some small table to resume quickly the artwork required for the iOS and OsX applications. They are often the same image, but in different resolutions. Here they are:

OsX

	Resolution	Notes
Icons	1024 x 1024 pixels 512 x 512 pixels 256 x 256 pixels 128 x 128 pixels 32 x 32 pixels 16 x 16 pixels
Toolbar icons (inside control)	19 x 19 pixels	Outline style, recommanded to be black
Toolbar icon buttons	32 x 32 pixels	Color with antialiasing
Sidebar icons	16 x 16 pixels 18 x 18 pixels 32 x 32 pixels	Black and white with alpha, all three resolutions required

More information for Os X here: Icon Design Guidelines

iOS

	Resolution	Notes
Icon for iPhone	57 x 57 pixels	Suggested name: Icon.png. No shadow or round corners required.
Icon for iPhone with Retina Display	114 x 114 pixels	Suggested name: Icon@2x.png. No shadow or round corners required.
Icon for iPad	72 x 72 pixels	Suggested name: Icon-72.png. No shadow or round corners required.
Small icons iPhone (Spotlight and settings)	29 x 29 pixels
Small icons iPhone High Resolution (Spotlight and settings)	58 x 58 pixels
Small icons iPad (Spotlight)	50 x 50 pixels	It trims the side pixels (safe area 48x48)
Small icons iPhone (settings)	29 x 29 pixels
Toolbar icons for iPhone	20 x 20 pixels	Approximately
Toolbar icons for iPhone High Resolution	40 x 40 pixels	Approximately
Toolbar icons iPad	20 x 20 pixels	Approximately
Tab bar icons iPhone	30 x 30 pixels	Approximately
Tab bar icons iPhone High resolution	60 x 60 pixels	Approximately
Tab bar icons iPad	30 x 30 pixels	Approximately

More information for iOS here: Custom Icon and Image Creation Guidelines

Open source/free toolbar icon sets

Some link to free/open source iPhone toolbar icon set:

• TWG Retina Icons
• PP Free iPhone Toolbar Icons
• Glyphish