In fact, using sprites are so effective many of the internets biggest site’s are using them, all in slightly different ways. On such sites a truely huge number of requests are saved every day. For example, Youtube, Google, AOL, Amazon and Apple all use CSS sprites. Take the mimilist example of Google (left):
Youtube, does things slightly different and uses a absolutely massive sprite 2800px in height! You’ll notice that some sprites are tightly packed together and other have spacing around each image. This is to allow for browser based text sizing, that would otherwise display multiple background images. A good example of planning for such an occurance is Digg’s sprite, where each image is highly spaced out.
The CSS is relatively simple. Take the example of a simple unordered list with a different image for each item. I made a very simple sprite and applied the background-position property to each link class. Here’s the simple HTML used for the list: Continue reading CSS Sprities and Website Optimization