The application of information technology in various companies will improve employees’ performance so that the business results obtained by the company are of higher quality. The school library has a relatively significant influence on the learning process and expands students’ knowledge. However, in reality, many libraries still have not utilized information technology to manage their management, so some parties sometimes encounter obstacles that can hinder performance and efficiency. This study built a web-based library information system using the Iconix process method with the case study SMA Negeri 1 Ngimbang, Indonesia. The findings of this study will be able to be implemented, promoting the efficiency of data and library information management and boosting.