Do more with your
GPS activity data
Overlay live gauges on your video, stamp stats on photos, merge and analyse GPX files, and more. Free browser tools for cyclists and runners — no account needed.
Explore the toolsCreate
Put live speed, a moving map, heart rate and elevation gauges on your ride or run video. Free, no watermark, no install.
Add a video overlayTurn a GPX or FIT into a shareable image — your route and numbers on a photo. Pick a template, export in seconds.
Make a stats imageMore tools
Shift GPX/FIT timestamps to match a video clock.
Zones, splits, best efforts & segment detection.
Two files or two attempts, synced chart by chart.
Combine two or more GPX/FIT into one activity.
FIT to GPX, TCX, JSON or CSV — all in-browser.
Why Stamptivity
Private by default
Files are processed in your browser and never uploaded to a server.
Free, no watermark
Every tool is free, with no account and clean JPG / PNG / MP4 exports.
Nothing to install
Runs in any modern browser — Windows, macOS, Linux or ChromeOS.
Works with your gear
Garmin, Wahoo, Strava, COROS, GoPro, DJI & Insta360 — GPX & FIT.
FAQ
Is Stamptivity free?
Yes — every tool is completely free. No account, no trial, and no watermark on your exports.
Do I need to create an account?
No sign-up is required — open a tool and start. Connecting Strava is optional, only if you want to import activities directly.
Are my files uploaded to a server?
No. Your GPX/FIT files, photos and videos are processed locally in your browser and never leave your device.
What files and devices does it support?
GPX and FIT from Garmin, Wahoo, Strava, COROS, Apple Watch and most bike computers and watches — plus MP4/MOV video for the overlay tool.
Dashware discontinued?