What is a CIMG file?
Developed by CImg, the Cool Image (CIMG) file extension is a binary format raster image. The software is an open-source C++ template library that processes image data. The file may bundle a single image or a flurry of them. It stores images in PNG or JPG and other standard file formats which allows for easy manipulation with the CImg program.
How to Open CIMG Files
How to Make CIMG Files
Exact steps for creating CIMG files will vary by program and operating system. Download one of the above listed programs and you should be able to follow typical procedure for opening files or creating files from the File menu. Typically you will select File > Open or File > New and continue through the prompts. Some programs may follow a different procedure for either creation or opening of files.