The European Researchers' Night is a free event open to all, which aims to make scientific research known to as many people as possible. This event is organized every year in several European cities, in France and overseas. We worked on the 20-page model of the program (printed and digital) of the European Researchers' Night in Saint-Etienne, France. This program described the different online and in-person activities organized by La Rotonde. La Rotonde is a scientific mediation center which is in charge of organizing this event for the Auvergne Rhône-Alpes region.