When discussing the size of advertisements, we generally refer to the format in which they are presented. In France, the standard paper format commonly used is A4, measuring 210 mm wide by 297 mm high. In printing, the first measurement always corresponds to the width of the paper. However, for advertisements broadcast on radio, in cinemas or on television, as well as for billboards, formats are also discussed in terms of duration (in seconds and/or minutes) or dimensions (in meters and centimeters).