The global coronavirus pandemic in spring 2020, has affected the daily functioning of institutions and society in general. The public libraries had to adjust to the new working conditions, especially after the total lockdown that not only prevented the provision of the regular library services at the libraries, but forced librarians and other library staff to work from home or to work remotely. The consequences of such circumstances reflected primarily in moving the library services to the virtual environment. The libraries activated, intensified, innovated and adjusted their services in order to carry out activities related to their social, information and cultural role in the communities in which they operate. The theoretical part of the thesis describes the role of public libraries in the society, their services with an emphasis on online services and the use of web 2.0 tools, and the adapting of the library services to the new circumstances caused by the coronavirus outbreak in Europe and Croatia. The research part of the thesis describes the results and analysis of a customer satisfaction survey related to the services before and after the coronavirus outbreak, including the lockdown period and the period of the gradual opening of the libraries. The survey included users of the Đakovo Town Library who were asked to state their opinion regarding the work of the library. The purpose of the survey was to gain insight of the level of satisfaction with the particular library services in order to be able to use it as a basis for the improvement, expansion and development of these services.