The easiest way to view a PRN file is to double-click the file and allow the computer's operating system to determine the best software application to open it. If the computer is unable to open the file, the proper software application may need to be downloaded to read the file.

Some programs may open a PRN file without allowing the file to be viewed by users. In this case, the computer's registry must be opened so that the file association settings can be changed. This allows users to find the right software application to associate with PRN files so that such files can easily be opened in the future.