Boldface text gives emphasis because it contrasts in thickness from body text. However, large blocks of text set in bold lack contrast and lose their effectiveness. Underlined and colored text is not desirable on Web pages because it can be confused with a hyperlink. Capitalized text is one of the most common and least effective methods for adding typographical emphasis. One of the most effective ways to create visual contrast is to add space before and after the header or title to differentiate it from a text block.
Indentation using a bulleted list is an effective means of distinguishing important information.
GIF images are preferred when compressing images with large areas of homogeneous color. The file format allows you to combine multiple images into a single file to create animations. This format supports Interlacing. This proves beneficial when downloading illustrations and pictures. JPEG is preferred when color is needed for detail and gives excellent results in most photographs.