This bachelor thesis deals with online marketing. The aim of the work is to analyse online marketing activities of the company Ušetřeno.cz s.r.o. For evaluation of these activities are, among others, used tools Google Analytics, Google Ads, Sklik, Google Lighthouse, Collabim, SEMrush or Microsoft Power BI. Based on the results of this analysis, suggestions for improvement are formulated during the work and at the end. The first part deals with an introduction to online marketing, web presentation and focuses in more detail on Internet advertising, including the use of social networks. The second part of the work is more technically focused and is devoted to search engine optimization (SEO) and web analytics. The third part is already purely...