| im8 | Sun Raster Image |
| ima | AIM Greyscale Image |
| imc | TMSat Compressed Image |
| img | VICAR Image |
| img | BIAS Fringe Processor Image |
| img | ADEX Corporation Bitmap |
| imga | Aleph One Image |
| imi | TMSat Image |
| imq | NASA Planetary Data System Compressed Image |
| ims | C64 Image System Multicolor Bitmap |
| imt | TMSat Thumbnail Image |
| imt | IMNET Image |
| ind | Adobe InDesign Document |
| indd | Adobe InDesign Document |
| info | Amiga Icon |
| int | Silicon Graphics RGB Image |
| inta | Silicon Graphics RGB Image |
| inx | Adobe InDesign Interchange |
| ioca | Image Object Content Architecture Format |
| ip | IconPackager Theme Data |
| iph | InterPaint Hires Image |
| ipick | iPick Football Image |
| ipix | iPIX Panoramic Image |
| ipl | IPLab IPL Image |
| ipp | Help and Manual Impict Image |
| ipq | iBrowser Layered Image |
| ips | iPIX Script |
| ipt | InterPaint Multicolor Image |
| ipx | iPIX Panoramic Image |
| irg | Super IRG Raster Image |
| iris | Silicon Graphics Iris Image |
| is2 | Fluke Ti32 Thermal Imager Data |
| ish | Image Speeder Image |
| ism | C64 Image System Multicolor Bitmap |
| isq | MicroCT Image Sequence |