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 Green Light Icon |
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Add Green Light icon to cartIcon sizes: 256x256, 48x48, 32x32, 24x24, 20x20, 16x16
File formats: ICO, GIF, PNG, BMP
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What Are PNG Icons?
Numerous independent vendors are supplying 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 platforms, and what standards are defined for Windows icons, Mac icons, and PNG icons.Computer icons are incorporated into any graphical user interface. Icons are small pictograms of standardized sizes that depict objects, actions, and other concepts. In window-based systems, icons are used as a faster, 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 easier for new computer users.
Originally developed in 1970 by the Xerox Research Center and widely popularized by the Mac OS and Microsoft Windows systems, icons make new users feel more comfortable with operating systems, learn faster and work more efficiently. Icons can be used to replace or supplement text messages. Commonly 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 multiple file formats for storing icons. Microsoft Windows systems store Windows icons in the platform-dependent ICO format. Apple Macintosh systems use Mac icons in their specific formats, while Unix-based systems employ PNG icons for most applications. As such, icon software is generally available for the Windows and Apple 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 use icon sizes of 16x16 to 128x128 pixels, while some platforms readily accept icon images as large as 512x512 pixels. The ultra-high definition 512x512 pixel icons were first used in Mac OS Leopard.
Pixel dimensions of all icons are platform dependent. For example, Windows icons are specified as images 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 resolutions of up to 256x256 pixels in True Color only. Optionally, images of 128x128 and 512x512 pixels are supported. Interestingly, the high-resolution Windows Vista icons are stored in compressed PNG format instead of Windows ICO used in previous versions of Windows and for lower resolution images. Other platforms such as Windows Mobile can use standard icons of other sizes, such as 24x24 pixels.
Many independent designers 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 sells royalty-free icons individually and in matching sets that include icons drawn a common style or theme.
Copyright © 2005-2022 Aha-Soft. All rights reserved.
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