PakBuilder - Version 1.0 With PakBuilder you can pack any file into a single PAK file and compile this PAK file into a standalone PakViewer executable that you can run like any other program. You can add, delete and extract files from the PAK file. In addition you can view HTML documents and Images in the PAK file with PakBuilder's integral HTML viewer. Files in the PAK file are not compressed, they are just combined into one easy to handle file.