The most commonly us ed format is GIF or Graphical Interchange Format . The other common format is JPG but it is not supported on all browsers. Limit the width of the image. Make sure graphics add meaning to the page. Do not use too many graphic images.
Some people only view pages in text mode.
This will bring up a dialog box. Choose to Save. Then place it in your mainframe account. This will place the graphic in the center of your page. In-line with text.