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 3D Graph Icon |
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Add 3D Graph icon to cartImage sizes: 256x256, 48x48, 32x32, 24x24, 16x16
File formats: BMP, GIF, PNG, ICO
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What Are PNG Icons?
A number of independent vendors are offering custom icons in sizes and resolutions standard to certain computer platforms. The article explains what icons are, how they are used and implemented in various platforms, and what standards exist for Windows icons, Mac icons, and PNG icons.Computer icons are an integral part of any modern GUI. Icons are small pictograms of standardized resolutions that depict objects, actions, and symbols. In window-based systems, icons are used as a faster, more intuitive way to communicate with the user. Icons representing typical elements of a user interface are better visible than text, can be recognized faster, and are easier for new computer users.
Originally developed in 1970 by the Xerox Research Center and widely deployed by the Apple Macintosh and Microsoft Windows systems, icons make new users feel more comfortable with operating systems, learn faster and work more efficiently. Icons can be employed to replace or supplement text commands. Commonly used in menus, toolbars, on buttons and in new ribbon-type user interfaces, icons have come a long way from the original concept.
There are several image formats for storing icons. Microsoft Windows systems store Windows icons in the platform-specific ICO format. Apple Macintosh computers store Mac icons in their specific formats, while Unix-based systems use PNG icons for most applications. As such, icon editing software is generally available for the Windows and Mac OS systems, while Unix users can create their icons with any graphic editor.
Generally speaking, icons are square pictograms that come in a number of standard sizes and color resolutions. Most systems use icons of 16x16 to 128x128 pixels, while some systems readily accept icons as large as 512x512 pixels. The high-resolution 512x512 pixel icons were first employed in Mac OS Leopard.
Pixel resolutions of all icons are platform dependent. For example, Windows icons are defined as pictures in 16 and 256-color gammas as well as True Color images with alpha channel. Windows icons come in standard resolutions of 16x16, 32x32, and 48x48 pixels. Windows Vista defines new standards for Windows icons, including icons in sizes of up to 256x256 pixels in True Color only. Optionally, images of 128x128 and 512x512 pixels are supported. Interestingly, the higher resolution versions of Windows Vista icons are stored in compressed PNG format instead of Windows ICO used in older versions of Windows and for lower resolution icons. Other platforms such as Windows Mobile can employ standard icons of other resolutions, e.g. 24x24 pixels.
Numerous independent vendors are providing custom icons. Aha-Soft offers a wide selection of Windows icons, Mac icons, and PNG icons in all sizes and resolutions common to those systems. The company provides royalty-free icons individually and in matching sets incorporating icons drawn a common style or theme.
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