What is the GPN file?
The GPN file extension can be associated with several types of files. Most often, however, a file with such an extension is associated with the GlidePlan Map Document format. GPN files are supported by Mac OS, Windows operating systems. The GPN file is one of the Text Files files, just like 440 of the other files found in our file information database.
A program that can open the GPN file is e.g. GlidePlan. This software was released by Matt Herron.
Programs, that can open .GPN files
How to open a .GPN file?
If you have problems opening the file GPN, then in most cases the problem is only the lack of the proper application installed. Select one of the programs from the list and install it on your device. The operating system should automatically associate the GPN file format with the installed program. If not, right click on your GPN file and select from the menu "Open with" . Then select the installed program and confirm the operation. Now all GPN files should automatically open with the selected program.