![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
|||||||||||||||||||||||
|
Image sizes: 48x48, 32x32, 24x24, 16x16 File formats: BMP, GIF, PNG, ICO ![]() ![]() ![]() ![]() What Are 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 are defined for Windows icons, Mac icons, and PNG icons.Computer icons are an integral part of any modern GUI. Icons are small pictures 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 depicting typical elements of a user interface are more visually appealing than text, can be recognized faster, and are easier for new computer users. Originally introduced in 1970 by the Xerox Research Center and widely popularized by the Apple Macintosh and Microsoft Windows systems, icons make computer novices feel more comfortable with operating systems, learn quicker and work more efficiently. Icons can be employed to replace or supplement text messages. 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 graphic formats for storing icons. The Windows systems use Windows icons in the platform-dependent ICO format. Mac OS 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 Apple systems, while Unix users can design PNG icons with any graphic editor. Generally speaking, icons are square pictograms that come in a number of standard sizes and color resolutions. Most platforms use icons of 16x16 to 128x128 pixels, while some platforms readily accept icons as large as 512x512 pixels. The big 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 pictures 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 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, such as 24x24 pixels. Many independent designers are offering custom icons. Aha-Soft offers a variety of Windows icons, Mac icons, and PNG icons in all sizes and resolutions standard to those systems. The company provides royalty-free icons individually and in matching sets incorporating icons drawn a common style or theme. ![]()
| Copyright © 2006-2022 Aha-Soft. All rights reserved. |
|