The bachelor work focuses on the problem of optimizing websites for search engines, which is currently very actual problem. It provides a comprehensive look at the process that will help us to better positions in the rankings of the most commonly used search engines and also helps us determine how those most widely used search engines work. In the theoretical part we discuss the various authorized and unauthorized modifications including optimization of the site outside the source code. In the practical part is analyzed different types of Web sites which using a lots of SEO tools. This can help us to know the difference in approaches in optimalization. Concurrently this analysis provide an overview of indicators, which is good to observe an...