Libraries are from the very beginning represented an indispensable ally in the educational process. With the advancement of technology, there is a need for changes in library work. Users' needs are increasingly more and more demanding, so libraries need to improve their programs and so that information becomes more accessible, and their flow faster and easier. The solution is in the digitization of library materials. There is a several major projects by which the digitization process is carried out systematically and in accordance with the standards. Libraries are interconnected, and users can also access references on the website. This type of library is called a hybrid form because there is still a part of the material that is only available in the conventional form. The beginnings of hybrid library are in university libraries that are first recognized the benefits of new information and communication technologies. In addition on the local level, university libraries are connected on the national and European levels. Centre for Scientific Information of the Ruđer Bošković Institute in Zagreb, Central Medical Library University of Zagreb, City and University Library in Osijek, Library of the University of Zadar, The University Libraries of Dubrovnik, National and University Library in Zagreb, The University Library of Pula, The University Library of Rijeka, The University Library of Split and Research Library of Zadar are the best examples of our digitized libraries.