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Apple Icon Image Format

Apple icon images (also called ICNS images) are used to save icons for files and folders for Mac OS X. They have a ".icns" extension.

Apple icon images are the native way to store icons. They can hold resolutions of 16, 32, 64, 128, 256, 512, and 1024 pixels square. You should use this format for saving application and document icons, and also for distributing standalone icons. The TIFF image format is generally better for general graphics in desktop applications since they can still store multiple resolutions, but can be of arbitrary size.

Related Topics

TIFF Image Format