The Online Library Management System (OLMS) is a web-based platform developed to modernize and simplify library operations in educational institutions. Built using HTML, CSS, JavaScript, and PHP, the system enables users to search, reserve, and check out books online through a user-friendly interface. It also provides administrative functionalities such as book cataloging, user management, and real-time book availability updates. By improving accessibility, efficiency, and digital resource management, the OLMS serves as a scalable solution suitable for academic libraries, public libraries, and other knowledge-based organizations.