The GPX viewer is made for the purpose of viewing the gpx file that you recorded.
You can load tracks from gpx file and show them on a Maps view. You can also see your GPS position on a map and use viewer as navigation.

This GPX Viewer does not save or share the file you select. It only works locally without going through the server. (HTML5 technology)
You can open a GPX file to view from your computer or your Google Drive.
With this viewer you can open a gpx file and view its contents very easily.

*What is a GPX file?
GPX, or GPS Exchange Format, is an XML schema designed as a common GPS data format for software applications.
It can be used to describe waypoints, tracks, and routes. The format is open and can be used without the need to pay license fees. Its tags store location, elevation, and time and can in this way be used to interchange data between GPS devices and software packages. Such computer programs allow users, for example, to view their tracks, project their tracks on satellite images or other maps, annotate maps, and tag photographs with the geolocation in the Exif metadata.