Size and quality Create small images without compromising quality. Edges should not appear jagged, nor should graphical text be blurry. Choosing the appropriate file type can enhance quality and cut down on image size. Your main goal is to enhance a page and the content. Don't let the image be the page.
Web browsers handle .JPG or .GIF formats.
This graphical format was designed to display a photograph image on the web. Developed by CompuServe in order to display an image on multiple platforms. Used for simple colored images such as line drawings, bar graphs, or clipart. The odds are against you when designing images for the web. There are so many variables that cause a graphic to display differently than intended.