GPS Visualizer

GPS Visualizer earns a place here as a compatibility tool rather than a trail guide. It can ingest many GPS, spreadsheet and log formats, plot them on a map, create an elevation profile, simplify a dense recording, or convert the result to GPX, KML and text. Missing elevations can be filled from NASA SRTM or, where available, USGS data. That breadth is useful when an old device, race file or shared track will not open cleanly in a modern hiking application.

Conversion cannot repair an incorrect route merely by changing its file extension. Added elevation describes a terrain model, not necessarily the altitude recorded by the traveler, and the maximum-point option may remove critical bends. The service also processes uploaded data on a remote website, so sensitive camps or private access locations deserve caution. Work on a copy, inspect timestamps and coordinate order, and compare the output against the source at known landmarks. For a life-safety route, load the converted file into the final device and verify it independently before depending on it offline.