The objective of this work is to determine how censorship can influence the design of film posters. To do this, a comparative analysis has been made between Spain and France in the period from 1939 to 1975, a time in which the Franco dictatorship and the censorship that this entailed developed, and at the same time the French had a democracy with freedom of expression. The posters analyzed are those of the films that won Oscars in those years. The methodology is based on quantitative analysis using a sheet that observes the use of color, typography, composition, technique and illustration in addition to the social values ​​present. It is evident that censorship acted by limiting freedom of expression, but in the case at hand and from the results obtained, it can be concluded that at the cinematographic level the Spanish poster is not so far from that produced in France, a regime whose freedom was more present due to democracy.