How are the files combined?

Each source GPX becomes its own track segment inside one merged track, kept in the order you add the files, and all waypoints are copied across. This preserves point order and timestamps.

Are timestamps and elevation kept?

Yes. Each track point is copied with its lat, lon, ele and time exactly as it appears in the source, so elevation and time data survive the merge intact.

Is anything uploaded?

No. Files are read and merged entirely in your browser using the built-in XML parser — your GPS data never leaves your machine.

What if a file is not valid GPX?

The tool reports which input failed to parse and skips it, so one bad file does not block merging the rest.

Why keep separate segments instead of one continuous line?

Keeping each source as its own segment avoids drawing a false straight line between the end of one day and the start of the next, which is what you usually want when stitching multi-day logs.

GPX Merger — Gera Tools

Merge GPX files in your browser

This tool combines several GPX files — for example one per day of a multi-day hike — into a single GPX document you can load onto a watch or into a mapping app. It is built for hikers, cyclists and tourers who record in chunks but want one clean file.

How it works

Each input is parsed with the browser’s DOMParser. The tool then builds a fresh GPX 1.1 document containing one track, and adds one track segment per source file so the original ordering and any gaps between recordings are preserved rather than being joined by a misleading straight line. Every trkpt is copied with its lat, lon, ele and time intact, and any standalone wpt waypoints are appended at the document level. The result is valid GPX that any tool can read.

Notes

All processing is local — nothing is uploaded. Add the files in the order you want them to appear in the merged track. To go the other way and break one file into pieces, use the GPX Splitter.