Merge GPX Files Online in Seconds
Lightweight, privacy-first GPX combiner that runs directly in your browser. Drag and drop tracks, clean duplicates, preview your merged route, and export polished data ready for training logs, GIS tools, or devices.
GPX Merger Workspace
| File | Points | Distance | Duration | Avg Speed | Actions |
|---|---|---|---|---|---|
| No GPX loaded yet. Drop files above to get started. | |||||
| Totals | 0 | 0 km | 0 | 0 km/h | |
Route Sketch
Visualizes the merged path in a normalized canvas so you can double-check direction and coverage before exporting.
GPX Output Preview
About This GPX Merger
Merge GPX Files Online is built for endurance athletes, mapping professionals, and outdoor storytellers who need flawless track consolidation without sending personal data to third-party servers. The tool parses every track client-side, keeps coordinates private, and performs fast geodesic calculations to ensure the combined route maintains accuracy. Smart duplicate cleanup removes overlapping points when activities cover the same stretch multiple times, reducing file bloat while keeping elevation and timing intact. A lightweight canvas sketch gives instant visual verification that segments line up before you export. Compared with bloated desktop utilities and generic web apps, this streamlined experience focuses on speed, precision, and trustworthy data handling.
How to Use the GPX Combiner
Drop up to fifty GPX files into the workspace or tap the upload area to browse manually. Adjust the sorting rule to keep the original order, stack activities chronologically, or merge from shortest to longest for race recaps. Toggle smart cleanup if you want the app to remove near-duplicate points recorded seconds apart. When files finish parsing, review the metrics table to confirm distances, duration, and average speed for each track. Select Merge GPX to build a unified file, then download it instantly, export a CSV summary for spreadsheets, or copy a ready-to-share GeoJSON payload for GIS pipelines. Everything runs offline, so you can keep working even on spotty connections.
Power Tips
- Sort by timestamp to knit multi-day adventures together chronologically before exporting.
- Use the CSV export to audit sensor anomalies or reconcile training journals quickly.
- Toggle timestamp preservation off when preparing files for devices that ignore duplicate time stamps.
- Monitor the route sketch to spot loops or direction flips that may need manual cleanup.
Frequently Asked Questions
Can I merge GPX files offline? Yes. All processing happens directly in your browser, so once the page loads you can disconnect and keep working.
How accurate is the distance calculation? Distances rely on the Haversine formula, which is the industry baseline for GPS processing and stays within a few meters of most professional tools.
Why is the GeoJSON copy feature unique? Competitor tools usually stop at GPX output; here you can immediately push merged data into GIS apps, heatmaps, or custom dashboards without extra conversion steps.
What file size limits should I expect? Browsers comfortably handle thousands of points per file, but for optimal performance keep combined uploads under about 15 MB.
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