.GPI File Extension
File Type 1Garmin Point of Interest File
What is a GPI file?
File used by Garmin personal navigation devices; stores the name and location of a user-defined point of interest; can be used to generate navigational routes as a destination or inter-route point.
File Type 2Gerber Photoplotter Information File
.GPI File Association 2
A photoplotter is used to make photolithography masks, or photo plots, for PCBs. Photoplots are transparent plates that have maps printed on them to overlay onto PCBs.
NOTE: The Gerber format was originally developed by Gerber Systems but is now maintained by Ucamco.
[projectname].gpi - The GPI file is named after the name of your PCB project.