What are PLN Files?
First, there are a few main types of PLN files with a few other less common ones. Adobe InDesign creates PLN files; PLN files are often used by GraphiSoft ArchiCAD software as project files; and Microsoft Flight Simulator uses PLN files for storing flight plans.
Free Downloads for Viewing PLN Files
Depending on what type of PLN file you are trying to view, you may be able to view it with one of the following free viewers. Since the different PLN files are not necessarily interchangeable, and especially if you are unsure of which PLN file type you have, you may have to experiment in order to find the right viewer.
Adobe InDesign PLN File Viewers
Adobe PLN files are plug-in files, not graphics files. These are not generally viewable files.
CAD PLN Viewers
- The CAD Viewer Archive - This archive lists numerous free and commercial viewers for viewing CAD (Computer Aided Design) file types including PLN files. Visit the websites for the free viewers listed and try them out if you are dealing with a CAD-related PLN file.
- ArchiCAD Software - If you can get a demo copy of ArchiCAD software, you will be able to open and view ArchiCAD PLN file while running the software in demo mode. You won’t be able to anything other than view the file without purchasing the full featured version. You can find trial downloads here.
Flight Simulator PLN File Viewers
- Google Earth - For Microsoft Flight Simulator Flight Plans, try using Google Earth. This type of PLN file can be imported into Google Earth and plotted manually. To do this, you would need to import your PLN file into Google Earth, create a separate folder with your waypoints listed in order, create a path that links the placemarks in order, and then create a KML file that contains both the placemarks and paths. In addition, software is available that will convert it for you. Try entering your PLN file into this Web site and see what happens as it converts your PLN file into KML for Google Earth.

WMV Files 