The availability of accurate and easily accessible public facility information is a crucial need for the public to support their mobility and daily activities. This research aims to design and implement a web-based geographic information system capable of interactively mapping public facilities in the South Tangerang city . The system was built using QGIS software for mapping, PHP and MySQL programming languages for data management, and HTML, CSS, and JavaScript for the user interface. The system development method used was Rapid Application Development (RAD), with stages including planning, design, development, and implementation. Data were collected through field observations, interviews, documentation, and literature review. The resulting system presents spatial data and public facility attributes such as name, type, address, operating hours, and parking availability. Testing was conducted using the black box method to ensure system functionality ran as expected. Evaluation results indicate that this system can assist the public and government in accessing public facility location information effectively and efficiently.
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