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 Pyramid Icon |
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Add Pyramid icon to cartImage sizes: 256x256, 64x64, 48x48, 32x32, 24x24, 20x20, 16x16, 512x512
File formats: BMP, GIF, PNG, ICO
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What Are PNG Icons?
A number of independent vendors are providing custom icons in sizes and resolutions common to certain computer platforms. The article explains what icons are, how they are designed and implemented in various systems, and what standards exist for Windows icons, Mac icons, and PNG icons.Computer icons are incorporated into any modern GUI. Icons are small pictograms of standard sizes that depict objects, actions, and other concepts. In window-based systems, icons are used as a quicker, more intuitive way to communicate with the user. Icons depicting typical elements of a user interface are better visible than text, can be recognized faster, and are certainly easier on the eyes.
Originally introduced in 1970 by the Xerox Research Center and widely deployed by the Mac OS and Microsoft Windows systems, icons make new users feel more comfortable with computer systems, learn faster and interact more efficiently. Icons can be used to replace or supplement text messages. Widely used in menus, toolbars, on buttons and in new ribbon-style user interfaces, icons have come a long way from the original concept.
There are several graphic formats for storing icons. Microsoft Windows systems use Windows icons in the platform-specific ICO format. Apple Macintosh systems store Mac icons in their specific formats, while Unix-based systems use PNG icons for most applications. As such, icon software is generally available for the Windows and Mac OS platforms, while Unix users can create their icons with any graphic editor.
Generally speaking, icons are square images that come in a number of standard sizes and color resolutions. Most platforms support icons of 16x16 to 128x128 pixels, while some systems readily accept icon images 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 specified as pictures in 16 and 256-color gammas as well as True Color pictures with alpha channel. Windows icons come in standard resolutions of 16x16, 32x32, and 48x48 pixels. Windows Vista implements new standards for Windows icons, including icons in sizes of up to 256x256 pixels in True Color only. Optionally, icons 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 use standard icons of other sizes, such as 24x24 pixels.
Many independent vendors are providing custom icons. Aha-Soft offers a variety of Windows icons, Mac icons, and PNG icons in all sizes and resolutions standard to those platforms. The company provides royalty-free icons individually and in matching sets that include icons drawn a common style or theme.
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