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 Clock Icon |
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Add Clock icon to cartIcon sizes: 256x256, 48x48, 32x32, 24x24, 16x16, 512x512
File formats: ICO, GIF, PNG, BMP
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What Are PNG Icons?
Numerous independent vendors are providing 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 are defined for Windows icons, Mac icons, and PNG icons.Computer icons are an integral part of any graphical user interface. Icons are small pictograms of standard sizes that visually represent objects, actions, and symbols. In graphical user interfaces, icons are used as a quicker, more intuitive way to communicate with the user. Icons representing typical elements of a user interface are more visually appealing 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 platforms, icons make new users feel more comfortable with operating systems, learn quicker and interact more efficiently. Icons can be employed to replace or supplement text commands. Widely 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 multiple image formats for storing icons. Microsoft Windows systems use Windows icons in the platform-specific ICO format. Mac OS systems use Mac icons in their specific formats, while Unix-based systems employ PNG icons for most applications. As such, icon editing software is generally available for the Windows and Mac OS platforms, while Unix users can create PNG icons with any graphic editor.
Generally speaking, icons are square images that come in a number of standard sizes and color resolutions. Most systems support icons of 16x16 to 128x128 pixels, while some platforms readily accept icons as large as 512x512 pixels. The high-resolution 512x512 pixel icons were first used in Mac OS Leopard.
Pixel dimensions of all icons are operating system 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 implements 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 images. Other systems such as Windows Mobile can use standard icons of other resolutions, such as 24x24 pixels.
Numerous independent vendors are offering custom icons. Aha-Soft offers a wide selection 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 incorporating icons drawn a common style or theme.
Copyright © 2009-2012 Aha-Soft. All rights reserved.
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