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Inline/Online: Fundamentals of the Internet and the World Wide Web, 2/e

Raymond Greenlaw, Armstrong Atlantic State University
Ellen Hepp, The University of New Hampshire

Web Graphics

Chapter 8 Key Terms

This glossary contains a list of important terms used in the text. Both the terms and their meanings are presented. This list is not intended to be exhaustive. For example, many of the HTML concepts are not included, but can easily be traced through the index.

animated GIF	A series of GIF images that are displayed in rapid succession, thereby creating a simple animation. (See 333-334, 631)



clip art	A collection of images that have been developed using image editing tools. (See 326, 633)



dithering	A process that approximates the color of each pixel in an image by using a combination of colors in a limited color palette. (See 639, 635)



freeware	Software that you can use at no charge. The author usually retains any copyright on it, and freeware frequently is unregistered. The source code is usually not provided. (See 258-260, 327, 637)



interlaced GIF	A form of GIF image in which the “whole image” starts to load initially, but appears blurry, and then comes into sharper focus as the download advances, until the image is finally complete. (See 334-336, 639)



lossless compression	A form of image compression in which no information is lost. (See 328-329, 332, 640)



lossy compression	A form of image compression in which information is removed. The key is to delete information that has little or no impact on the appearance of the image. (See 330-331, 640)



Lynx	The most popular text-based Web browser. (See 45, 353, 641)



public domain software	Free software available over the Internet; the source code is seldom available, but there may be guidelines as to how you are “allowed” to modify the original source code. (See 327, 475, 644)



RGB color model	A way to represent colors as combinations of red, green, and blue. (See 74, 329, 612, 645)



scanner	A device that converts images to a digital format. (See 325, 355-359, 645)



shareware	Software that you can download and test for a brief trial period. If you decide to use the software, you pay a small fee. Many times, the fee is collected on an honor system basis. (See 327, 646)

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