Match
Pairs photo capture times with the closest points on a GPX timeline.
Desktop app · Python
Released projectTrailTag
A Windows desktop app that matches photo timestamps to a recorded GPX track, previews the result, and writes GPS metadata to safe copies of the originals.
The problem
Photos know when.
GPX knows where.
Photos from cameras without built-in GPS still contain accurate capture times. TrailTag connects those timestamps to points in a GPX track so a folder of images can regain its location context without editing the only copy.
What it does
Preview
Lets the user review proposed matches before committing metadata changes.
Protect
Writes the results to safe copies, preserving the original photo files.
Package
Turns a Python workflow into an approachable Windows application.
What I focused on
- A workflow understandable to someone who does not want to think about GPX internals.
- Clear previews before file metadata changes.
- Useful validation and feedback when timestamps or tracks do not line up cleanly.
- A practical Windows delivery experience rather than a command-line-only tool.