Digital transformation involves significant changes within institutions or organisations. This paper focuses on the impact and opportunities of digital transformation in the public sector, presenting a bibliometric study that captures the general trends in the research on this topic. By examining 655 documents from the Web of Science database, from a performance and science mapping perspective, the study identifies key trends, influential authors and institutions contributing to this evolving field. We find that digital transformation in the public sector should be examined from both the innovation standpoint and the management of the transformation process. These insights offer valuable guidance for policymakers and researchers aiming to harness digital technologies for more resilient and efficient governance, focusing on economic recovery and stability, mitigating climate change risks for environmental sustainability, and ensuring social equity.