Graphics are used on many, if not most, Web Chapter Graphics …

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Research-Based Web Design & Usability Guidelines. Graphics are used on many, if not most, Web. pages. When used appropriately, graphics can facilitate …

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Research-Based Web Design & Usability Guidelines
Graphics, Images, and Multimedia
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Graphics are used on many, if not most, Web
pages. When used appropriately, graphics can facilitate learning. An important image to show on most pages of a site is the organization’s logo. When used appropriately, images, animation, video, and audio can add tremendous value to a Web site. When animation is used appropriately, it is a good idea to introduce the animation before it begins.
Many images require a large number of bytes that can take a long time to download, especially at slower connection speeds. When images must be used, designers should ensure that the graphics do not substantially slow page download times. Thumbnail versions of larger images allow users to preview images without having to download them.
Sometimes it is necessary to label images to help users understand them. Usability testing should be used to help ensure that Web site images convey the intended message. In many cases, the actual data should be included with charts and graphs to facilitate fast and accurate understanding.
It is usually not a good idea to use images as the entire background of a page. Complex background images tend to…

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