GPX (GPS Exchange Format) is an XML schema designed for transferring GPS data between applications and web services. It is an open and widely supported format used to describe waypoints, routes, and tracks. Waypoints represent specific points of interest with latitude, longitude, and optionally elevation, name, description, and other attributes. Routes are sequences of waypoints intended to be followed in a specific order. Tracks are collections of track points, each with a timestamp, latitude, longitude, and optionally elevation and other attributes, representing a recorded path. GPX files are commonly used for sharing GPS data between devices, importing and exporting data from GPS devices, and displaying GPS data on maps. They are often used in applications related to hiking, cycling, geocaching, and other outdoor activities. The format's simplicity and widespread adoption make it a standard for exchanging GPS information.