Files with the .CPG extension contain digital comics – page layout settings, cartoon sketches, backgrounds, textures, subtitles, dialogue boxes, and special effects. CPG files are created using the Manga Studio software, which is designed for creating comics – interestingly, in 2015, the software changed its name to Clip Studio Paint, and ComicStudio for Japanese markets.

The users can export CPG files into popular graphical formats, such as .JPG, .PSD, .PNG.