The escalation in demand for digital health services, particularly highlighted by recent global health crises, has emphasized the significance of eHealth literacy (eHL). This concept encompasses the skills necessary to effectively search for, comprehend, evaluate, and apply online health information to solve health-related issues. eHL not only facilitates navigation through the digital health landscape but also broadens the understanding of the digital divide within the context of health information accessibility. In this review, we encompassed individual eHL definitions and tools, focusing on the role of eHL during the COVID-10 outbreak, and with regard to gender, age and social inequalities.