The changes that universities must face nowadays, especially the need for sustainable development, imply the continuous readjustment of their performance in attracting more prospective students. For the improvement of digital assets in the enrolment process, much attention has been gained, and this has become the starting point for presenting the educational offers of European universities. The concern about attracting candidates more efficiently and with long-term positive effects by using the online environment has led authors to conduct a study on the management of page loading speeds to identify the best practices in communication in post-secondary settings. In this research, a data analysis was performed with Google PSI, which measured academic sites’ page loading times, and the QS 2021 ranking for European universities in order to identify the issues that universities must take care of to increase their digital performance, improve candidates’ experiences, and achieve sustainable development.