GPSDetect is a Firefox add-on designed for web development and IT professionals, focusing on the automatic detection of embedded GPS coordinates in JPEG images. As users download images, GPSDetect scans them for EXIF data that may contain geographical information. When such data is detected, the add-on alerts users and provides a direct link to a mapping service, enhancing the usability of image data for location-based applications.

In addition to its scanning capabilities, GPSDetect maintains a history of detected images, accessible via a convenient toolbar button. This feature allows users to easily reference previously scanned images and their associated GPS data. For testing purposes, users can verify the functionality of GPSDetect by visiting specific media pages, such as those found on Wikimedia Commons, which host images with GPS EXIF data.