The GPX (GPS Exchange Format) file format is an XML schema designed for transferring GPS data between applications and web services. It is an open and widely adopted standard for storing and exchanging waypoint, route, and track data. GPX files contain information such as latitude, longitude, elevation, timestamp, and other attributes associated with geographic locations. This makes it ideal for sharing GPS data collected from devices like handheld GPS units, smartphones, and vehicle navigation systems. The format's human-readable XML structure allows for easy parsing and manipulation by various software tools and programming languages. GPX is commonly used in mapping applications, geographic information systems (GIS), and outdoor navigation software for planning routes, recording tracks, and sharing location data with others. It's a versatile format that facilitates interoperability between different GPS-enabled devices and platforms, making it a cornerstone of modern location-based services and applications.