gpx.studio

gpx.studio is the practical workbench between downloading a route and loading it onto a watch, phone or handheld GPS. Multiple files can be merged, a long recording can be cropped or split, points can be moved, and an excessive track can be simplified while previewing which points remain. It can also add or replace elevation using its documented terrain source. The visual result is immediately exportable as GPX, so the tool is approachable for users who do not need GIS software.

Editing a line can accidentally remove information that mattered in the field. Simplification trades point count for geometric detail, and replacing recorded altitude with a terrain model changes what the data represents. A snapped line may follow mapped geometry through a closure or across a bridge that no longer exists. Keep the unmodified source file, use the lowest simplification that satisfies the target device, and inspect steep switchbacks and junctions at high zoom. Treat computed ascent as an estimate and validate the final file on the actual navigation device before leaving.