The aim of this thesis is to address how the COVID-19 pandemic impacted the operations of the Zagreb Library Association (ZLA), specifically examining the extent to which the shift to online work contributed to the functioning of the association. By analyzing annual reports, publications of the association, and posts on their websites, the necessary data was gathered to draw concrete conclusions. The expected outcome is a detailed insight into the activities of the Zagreb Library Association during the COVID-19 pandemic years, specifically from 2020 to the first half of 2022. Additionally, the data on the association's operations from 2020 to 2022 will be compared with the year 2019 to clearly highlight the differences and adjustments in their activities due to the COVID-19 pandemic. This includes an analysis of membership numbers, activities, events, and projects to provide a comprehensive picture of the association's transformation and adaptation during these challenging times. Furthermore, the thesis will explore how the adaptation of activities to online or hybrid formats has either aided or hindered the overall functioning of the Zagreb Library Association. Special attention will be given to the impact of digitalization on the accessibility and engagement of members, as well as how virtual platforms have enabled the continuity of educational and professional programs. The goal is to highlight key lessons and strategies that can serve as guidelines for the further development and enhancement of the library profession in the digital age.