.POP File

The pop file extension is currently typically related to Team Fortress 2 multiplayer first-person shooter and used for one of the default settings file used in the game. Used to define parameters for MvM mode (Mann vs. Machine).

Files with pop file extension can be nowadays mostly found as part of Team Fortress 2 computer game. Used as one of the settings file.

How to open:

You can view and edit these files using any text editor.

How to convert:

No direct conversion possible, but since it's a text file you can handle it as such.