This work is trying to describe the development and the present state of online bookselling in small language markets like this one in Croatia. The research covers the development of online bookselling which was manifested in the early 1990s along with the revolution of informational and communicational technologies. The changes in technologies had a direct influence on more simple and cheaper exchange and sale of printed and digital products and services. Soon after this period, the online commerce became a synonim for the process of buying and selling of all printed and/or electronic publications via the Internet. Even though the online commerce is significantly developed in the world, the situation in Croatia demands a constant investment in the growth of this type of commerce, because when we compare the level of technological equipment it is evident that the Croatian purchasers are still behind those who live in the developed Western countries. There were as many as 150 libraries registered in 2011 in Croatia, while in 2014 there were 1654 E-books available. E-books are usually available in ePub and in PDF formats, and some of the most popular have been listed and described in the text of this thesis. At the very end of the research, by comparing the markets covered by small languages, I have recorded the present number of the available titles together with the related publishers, as well as E-book distributional formats and the price of E-books.