A program which takes a series of graphics expressed in the Graphics Interchange Format. Each image represents one frame of an animation which differs slightly from the previous frame and from the next frame. The tool takes each frame, displays it for a short period, and then displays the next frame. There are a large number of utilities which enable the Web designer to produce GIF animations including shareware programs. Increasingly tools for developing Web pages contain facilities for creating the animations and embedding them in Web pages.