Use JPEG for photographs . Use GIF for line drawings or drawings which use only a few colors. Battle of the Images File size is the reason. Keep the file sizes as small as possible without losing image quality. These files use a lots of memory.
Big files take longer to download.
Don t make the page too long Chain Gang Test all of your pages on another computer. Test your links using another computer. Check to see if all of your images are visible. Have others check your web pages. The material contained within these web pages only applies to those courses and sections taught by Richard Harwood.