Trim GPX
Cut start / finish
Your file is never uploaded — processing stays in your browser.
File is never uploaded.
Trim start/end by percent or point count. Local in the browser.
FAQ
How can I trim the start and end?
Choose percent or point-count mode and set how much to cut from the beginning and the end.
Does the elevation profile change after a trim?
Yes, because cut points disappear. Re-check stats in the GPX Viewer.
Can I undo a trim?
There is no separate Undo button. Reload the original and run a new trim with the values you need.
What happens to waypoints at the very start of the track?
Points of interest in the trimmed section may drop from the result — check them before saving.
Is the file uploaded during trim?
No. Trimming runs only in the browser.