A website that ranks at the very top of search results creates a trusted page or company, that is featured on that page for users. Such a site can expect more visitors and desired results, for example purchase of a product. High search engine ranking can be achieved through search engine site optimization. This diploma thesis is covering all the basic optimization methods, which will be included in building a website. Focus is on optimizing for Google search engine, that is still the most used and reliable search engine.