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 Three Icon |
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Add Three icon to cartIcon sizes: 256x256, 48x48, 32x32, 24x24, 20x20, 16x16
File formats: ICO, GIF, PNG, BMP
Purchase entire Standard Hand Icons now! View Standard Hand Icons now!
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What Are PNG Icons?
Many independent vendors are supplying custom icons in sizes and resolutions common to certain systems. 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 graphical user interface. Icons are small pictures of standardized sizes that visually represent objects, actions, and other concepts. In graphical user interfaces, icons are used as a quicker, more intuitive way to communicate with the user. Icons depicting common elements of a user interface are better visible than text, can be recognized faster, and are easier for new computer users.
Originally introduced in 1970 by the Xerox Research Center and widely deployed by the Mac OS and Microsoft Windows systems, icons make computer novices feel more comfortable with operating systems, learn faster and interact more efficiently. Icons can be employed to replace or supplement text messages. Widely used in menus, toolbars, on buttons and in the latest ribbon-style user interfaces, icons have come a long way from the original concept.
There are multiple file formats for storing icons. The Windows systems store 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 software is generally available for the Windows and Mac OS systems, while Unix users can design PNG icons with just about any graphic editor.
As a rule of thumb, icons are square pictograms that come in a variety of standard sizes and color resolutions. Most systems support 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 dimensions of all icons are operating system dependent. For example, Windows icons are specified as pictures in 16 and 256-color gammas as well as True Color images with alpha channel. Windows icons are supplied in standard resolutions of 16x16, 32x32, and 48x48 pixels. Windows Vista defines 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 older versions of Windows and for lower resolution images. Other systems such as Windows Mobile can employ standard icons of other sizes, e.g. 24x24 pixels.
Numerous 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 common to those systems. The company provides 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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