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F E A T U R E

AppCelera Burns Up the Last Mile

November 26, 2001
By Lori MacVittie

Images: Just Say No!


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Perhaps the company behind that image-laden Web site doesn't see the need for content acceleration, but you love the site and it contains information vital to your users. What can you, on the client side, do to improve performance without changing hardware?

Turn off image loading. Most content raising the bar on bandwidth requirements is image-based -- JPEGs, GIFs, PNGs. But unless these images are important to what you're viewing, you can do without them.

Most browsers, including Konqueror, Microsoft Internet Explorer, Mozilla, Netscape Navigator and Opera, let you turn off automatic image downloading. That means that any object in an <IMG> tag will be ignored. The browser, however, will show the text contained in the ALT attribute of an image object. This text can guide your decision on whether to load a particular image. In fact, Mozilla 0.7 offers the ability to load images selectively. For example, you can choose to load all images, load no images or load images from the originating server only. Internet Explorer goes one step further and lets you choose specific images in the page once the page loads.