Energy efficiency of the web design based on website performance measurements

The article is oriented towards studying technical sustainability of UX/UI design, exploring the approaches to website creation: responsive, adaptive and mobile-first design. Measurements were made for the performance of the different web page elements that make up a web page, testing the various methods for creating an element, as well as structuring the web page as a whole. Experimental measurements were made for responsive and adaptive designs and for 3 types of mobile devices: smartphone, tablet and laptop. Based on the analysis of the collected measurement results, conclusions are drawn, and specific recommendations are given for optimization in creating effective web page designs for different design approaches.