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Large Icons for Vista
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 Large Icons for Vista

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Image sizes: 256x256, 128x128, 64x64, 48x48, 32x32, 24x24, 20x20, 16x16
File formats: ICO, BMP, GIF, PNG

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What Are PNG Icons?

Many independent vendors are offering custom icons in sizes and resolutions standard to certain computer platforms. The article explains what icons are, how they are designed and implemented in various systems, and what standards are defined for Windows icons, Mac icons, and PNG icons.

Computer icons are incorporated into any modern GUI. Icons are small pictures of standardized resolutions 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 standard elements of a user interface are more visually appealing than text, can be recognized faster, and are certainly easier on the eyes.

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 computer systems, learn quicker and work more efficiently. Icons can be employed to replace or supplement text commands. Commonly used in menus, toolbars, on buttons and in the latest ribbon-type user interfaces, icons have come a long way from the original concept.

There are several file formats for storing icons. Microsoft Windows systems use Windows icons in the platform-specific ICO format. Mac OS computers 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 Apple systems, while Unix users can create PNG icons with just about any image editor.

As a rule of thumb, icons are square pictograms that come in a number of standard sizes and color resolutions. Most systems support icon sizes of 16x16 to 128x128 pixels, while some systems readily accept icons as large as 512x512 pixels. The ultra-high definition 512x512 pixel icons were first used in Mac OS Leopard.

Pixel resolutions 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 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 employ standard icons of other resolutions, such as 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 standard to those platforms. The company sells royalty-free icons individually and in matching sets that include icons drawn a common style or theme.

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Download Large Icons for Vista
Free Business Desktop Icons Free Business Desktop Icons is a collection of 10 ready icons for use in commercial and personal projects, such as software applications, webpages, blogs, and presentations. The graphics are free for personal, frequent and commercial use.

Standard Hotel Icons Making applications for hotel business can be quite a challenge, and there is often no time to think about GUI for your project. With Standard Hotel Icons you will momentarily get all the images you need at a reasonable price.

People Icons for Vista People Icons for Vista illustrate people of various jobs, groups and family status. They are crafted in Vista style and are available with or without shadows. Icons are provided in various formats and sizes.

Health Care Icons Health Care Icons is a library of beautifully crafted icons associated with the field of health service. The images are provided in various formats and resolutions.

Medical Icons for Vista Medical Icons for Vista has been created to eliminate any misunderstanding arising while viewing a medical Web site or operating a medical program. The images are provided in various sizes and formats.