We will analyze the web-resources and identify errors that may complicate the promotion of sites. We optimize HTML-code, improve navigation, solve various issues with a web project. If the promotion of the website is accompanied by problems on the part of the search engines, its effect will dramatically decrease. Actually, this requires a technical audit. Marketing audit is necessary for the promotion of the Internet site to provide an effect in terms of increasing the company's profit due to advertising in the global network.