The use of images in history classes is becoming increasingly important despite the many problems related to the reading and understanding of these images. Gervereau (2004) offers a multidisciplinary reading grid of images so that teachers can use it according to their goals. The use of this grid should allow students to acquire the skills necessary to decrypt images in history in order to be critical of contemporary images. This article proposes an analysis of the sequences available on the site Edubase History Geography, for a secondary level four course studying the chapter "Revolution, freedoms, nations at the dawn of the contemporary era". Through Gervereau’s grid, particular skills developed in secondary four level classes emerge.