The study subject is Leaflet library which is used to display maps on websites. The work purpose is the development of web application "Interactive map of the TPU campus" designed to search for buildings of Tomsk Polytechnic University, display information about them and make routes between them using Leaflet. During the research a few stages were accomplished, such as the subject area analysis, the design of the web application and its implementation. Present book describes all stages of creating this application.