Do not use graphics excessively. Excessive use of graphics greatly slows the speed at which a page loads. Keep banners under 50k. Buttons and icons should be smaller than 10k. Use thumbnails in place of large images in your webpage.
Thumbnails are small versions of a large image, thumbnails load much faster.
Do not hide links in graphics. Links should be easy to find. Always use the alt attribute in your image tags. Many users cannot or do not view all images. Writing Code Keep your code simple.