The work is of a practical nature and aims to optimise the processes within the considered company engaged in electronic gifting in the Russian Federation. The main goal of the work is to change the existing approach to testing usability in this company. The research of existing materials and articles in assessing the usability of user interfaces carries out to form a theoretical base. The obtained information is used to analyse one of the methods applied to evaluate user interfaces in the considered company. As an example, the work considers the interface of a web application. As a result, methodological errors in the application of one of the methods are identified, the effect of the testing is evaluated and a list of recommendations for planning and conducting subsequent testing is formed.