Old Training Center exports, treadmill apps, legacy archives — out to the format everything reads. Free. No signup. Nothing stored.
Position, elevation and timestamps map directly. Heart rate and cadence are written as Garmin
TrackPointExtension tags. Power (TCX Watts) has no GPX home — export
TCX → CSV if you need it.
Your file is never written to disk. It is parsed in memory, converted, sent back, and garbage-collected. No accounts, no tracking pixels, no “files are deleted after 24 hours” fine print — there is nothing to delete.