A web-fed rotary printing press includes a printing unit which has a specific width for printing a web with six adjacent vertical printed pages in a first newspaper format. A longitudinal cutting device is used to divide the web into three partial webs, each of which having a width corresponding to two of the newspaper pages. A folding assembly includes a group of three fold formers which are located next to each other on a machine plane. The three formers are disposed in the web-fed rotary press in such a that the two distances between the folding planes of two of the formers, which are placed next to each other in pairs, can be modified.