| ceg | Tempra Show Bitmap |
| cel | Atari ST Cyber Paint Cell Image |
| Kisekae Set System CEL File |
| Lumena Cell Information |
| ceph | Kodak Trophy CEPH Image |
| cex | ThumbsPlus Image Data |
| cfp | CoverFactory Native Bitmap Format Data |
| cg4 | CALS Group 4 Bitmap |
| cgm | Computer Graphics Metafile |
| ch | Scitex Continuous Tone |
| ch1 | Lotus Freelance Graphics Chart |
| che | Commodore 64 Cheese Image |
| ciff | Canon Raw Image |
| cimg | CImg Image |
| cin | Atari 8-bit Champions Interlace Image |
| Kodak Cineon Image |
| cip | Cisco IP Phone Image |
| cit | Intergraph Format Bitmap Image |
| cl0 | Atari ST Paintworks Image |
| cl1 | Atari ST Paintworks Image |
| cl2 | Atari ST Paintworks Image |
| clip | Clip Studio Format Image |
| clo | Cloe Raytracer Image |
| cloe | Cloe Raytracer Image |
| clp | GoDot Image |
| cm5 | Amstrad CPC Mode 5 Image |
| cmp | Atari ST Public Painter Image |
| JPEG Bitmap Image |
| cmt | Chinon ES-1000 Image |
| cmu | CMU Window Manager Bitmap |
| cmuwm | CMU Window Manager Bitmap |
| cmyk | Raw CMYK Bitmap |
| col | Atari 8-bit Technicolor Dream Image |
| colz | Adobe Collage |
| cop | Capture One Preview Image |
| cot | Intergraph Format Bitmap Image |
| cp3 | Atari ST Picworks Image |
| cp8 | CP8 256 Grayscale Image |
| cpa | Prism Image |
| cpbitmap | iOS Wallpaper Image |
| cpc | Amstrad CPC Captured Screen |
| Cartesian Document Image |
| cpd | Compression PhotoDefiner Image |
| cpi | Atari 8-bit Marco Pixel Editor Image |
| Calamus Raster Graphics Data |
| cpr | Atari 8-bit Trzmiel Compressed Image |
| cps | Colored PostScript |
| Corel Photo House Image |
| cpsd | Adobe Photoshop Compressed Image |
| cpt | Atari ST Canvas Compressed Image |
| Corel Photo-Paint Image |
| cpt6 | Corel Photo-Paint Image |
| cpx | CinePaint XML-tagged Image |
| CryptaPix Encrypted Image |
| cr2 | Canon Raw 2 Image |
| cr3 | Canon Raw 3 Image |
| crceph | Kodak Trophy CEPH Image |
| crg | Calamus Raster Graphics Data |
| cri | Crystal Reports Image |
| GE Medical CRI Image |
| crio | Kodak Trophy IO Image |
| crpano | Kodak Trophy Panoramic Image |
| crw | Canon Raw Image |
| cs1 | Sinar CaptureShop RAW Image |
| cs16 | Sinar CaptureShop RAW Image |
| cs4 | Sinar CaptureShop RAW Image |
| csh | Adobe Photoshop Custom Shapes |
| cslm | Zeiss CSLM Bitmap |
| csm | Sinar CaptureShop RAW Image |
| ct | Scitex Continuous Tone |
| Silicon Graphics Iris Cliptexture |
| TIFF Contone File |
| ctf | GammaFax TIFF Compressed Page |
| Optigraphics Image |
| cubi | Cubicomp PictureMaker Bitmap Image |
| cur | Windows Custom Cursor |
| cursor | Windows Custom Cursor |
| cut | Atari 8-bit Cut Creator Image |
| Dr. Halo Bitmap Image |
| cv5 | ACDSee Canvas 5 Drawing |
