GPX Track Compare

About

GPX Track Compare helps runners, cyclists, hikers, race organizers, and route
planners visualize and compare local GPX tracks directly in the browser.

Instead of opening one GPX file at a time or switching between several tools, you
can load multiple tracks together, see them on the same map, compare their
elevation profiles, and detect where routes overlap. It is designed for quick,
visual answers to practical route questions: where do these tracks separate, how
much of the course is shared, which option climbs more, and how closely did the
completed activity follow the plan?

Common use cases:

- Compare a planned route with the activity you actually completed.
- Review different race distances from the same event, such as 50 km, 75 km, and
  100 km courses.
- Check how a route changed between editions of the same race or event.
- Compare training alternatives before choosing the best option for the day.
- Inspect shared segments between two or more courses.
- See whether routes share the same start before splitting into different loops.
- Compare elevation gain, descent, distance, and profile shape at a glance.
- Review route variants before exporting or sharing a final GPX file.
- Understand where two tracks diverge after following the same valley, ridge,
  road, or trail section.

What the extension does:

- Opens local GPX files selected by the user.
- Displays multiple tracks together on an interactive map.
- Shows elevation profiles for loaded tracks.
- Calculates useful route metrics such as distance, ascent, and descent.
- Detects shared route segments, including shared-from-start comparisons.
- Uses distinct colors and visual offsets so overlapping tracks remain readable.
- Lets you switch map layers while keeping your route comparison intact.

Why it is useful:

GPX files often represent real decisions: the course you planned, the activity
you recorded, the official race route, an older edition of an event, or an
alternative path you may want to try next. GPX Track Compare puts those tracks in
one focused view so you can compare them without uploading them to a training
platform, editing them in a GIS tool, or manually jumping between browser tabs.

The extension is especially helpful when routes are similar but not identical.
Small differences can matter: a shortcut, a revised descent, an added loop, a
different aid-station approach, or a long shared section before the final split.
Seeing all tracks together makes those differences easier to understand.

Privacy-first by design:

Your GPX files are processed locally in your browser. The extension does not
upload GPX files, route geometry, activity data, or personal location history to
any server. No account or login is required. Network access is only used to load
map tiles from the selected map provider.

GPX Track Compare is a focused tool for people who work with routes and want a
clear, fast, local way to compare them.