Why this tool is useful
Check an activity, hiking route, vehicle trace or navigation export for gaps and malformed positions before archiving or moving it to another mapping application.
Local File Tools · runs locally
Private GPX Track and Route File Auditor
Inspect a saved GPX 1.0 or 1.1 file for tracks, segments, routes, waypoints, invalid coordinates, duplicate points, timestamps, elevation coverage and total distance without sending a location history anywhere.
Ready. Your working data stays in this browser.
Files and capture streams stay on this device. Processing uses browser APIs only; nothing is uploaded to YTSave, the media API or a proxy. No server copy is created, stored or left to delete. The file picker is cleared when processing starts, and disposable worker memory is destroyed after completion or cancellation. Preview and generated-output memory is released when you clear the tool or leave the page.
How it works
The browser parses a bounded GPX XML document as inert data, validates latitude, longitude and time fields, and calculates route distance with the Haversine formula.
Practical example
Audit a fitness-device export to find one out-of-range coordinate, repeated samples and missing elevation values before importing the corrected track into a map.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.