What is a ZKS File Type?
Only if you are trying to move or modify Pathfinder Kingmaker to save files will you likely encounter ZKS files. ZKS files are not intended to be opened manually, but referenced by the game to load the game's progress.
Although the ZKS files are not intended to be opened manually, you can extract and open information from the files by changing l' extension of files from .zks to .zip. A Zip utility, such as Microsoft File Explorer or Corel WinZip, can be used to extract content (player.json, party.json, etc.) from .ZIP archives. Be careful to change the contents as the changes could corrupt the data saved in the game.
After editing, save the edited files and compress-them in a ZIP archive. Then change the extension of the .zip file to .zks and place the file in the file; backup location of' origin.
Pathfinder Kingmaker creates and stores the ZKS files in the following directory.
C: \AppData\ LocalLow\ OwlcatGames\ Pathfinder Kingmaker\ Saveed Games.