Web Images Should be Small

Images take up the majority of the download time in most Web pages. If you optimize your Web images you will have a faster loading Web site. Here are a few tips to making large Web images smaller.
There are only three image formats for the Web, but each is built for a specific purpose.
JPEG
This format is for images with millions of colors that have a more photo realistic look. In fact, you should use the jpeg format for photographs, and other images that have a lot of colors. The jpeg format is a "lossy" format, so try to avoid editing and saving the same file over and over again, as the images will lose quality.
GIF
This format is for images with a small, set number of colors. Most images created for the Web are created in GIF format. GIF images use an index of colors for the image, colors that are not used in the image, don't need to be included in the index. This format is good for logos.
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