TrackReducer is a command line tool that helps you reduce the size of your GPS-tracks. This can be useful, because some programs can only edit or display a limited number of points. The file size is decreased, too (the output file can be compressed optionally).
TrackReducer deletes points from a track using the Douglas-Peucker algorithm.

The following example shows a track as it was recorded with a GPS (blue line) and a reduced version of the same track (red line):

Map: © OpenStreetMap and contributors, CC-BY-SA        Tracks: © Spirit Of Biking (only in German)         Tracks added to map using OpenLayers

As you see, the reduced track is always near the original, but the number of points has been decreased (the whole track has only about 25% of the original points).

TrackReducer is licensed under the GNU General Public License version 3.

As TrackReducer is a Java application, it will run on all operating systems with a JRE.
The program is available in English and German.
TrackReducer can only edit GPX-files (*.gpx).


You can download TrackReducer here.


See Feedback and Questions.