When it comes to online journalism, then we are talking about the kind of journalism that is accomplished through the internet. Appearance of online journalism has brought many benefits to the journalism profession, but also some negative trends. A growing number of authors are writing about the decline in standards, professional and ethical criteria in journalism, and whether negative trends are visible in reporting about veganism will be determined by research in our work. The main objective of the paper is to investigate what and how in 2018 the three most visited daily information portals in the Republic of Croatia (Index.hr, 24sata.hr and Jutarnji.hr) wrote about veganism and to determine the public opinion about veganism generated by portals based on the results obtained. The emphasis of the research is on the topics that are raised when it comes to veganism, as well as the function of the articles. The paper presents the results of quantitative and qualitative content analysis based on 73 articles, which showed that Croatian portals approach to the topic sensationally, very little space was devoted to education on veganism, and the content published on portals was mostly surface-processed, without deeper analysis, dwelling only on the description of the occurrence, event or person. On the other hand, a positive view of the topic prevails, which contradicts the hypothesis, and vegan topics are diverse, but they are mostly trivial, while journalists largely do not express their own views and comments in favor of objective coverage of the topic.