| .gro |
Graphic Object Bitmap |
| .gmbck |
Game Maker Background Image File |
| .gfie |
Greenfish Icon Editor Pro Graphic |
| .gmspr |
Game Maker Sprite File |
| .ggr |
GIMP Gradient File |
| .gfb |
GIFBlast Compressed Image File |
| .gry |
Grayscale Image |
| .grob |
Graphic Object Bitmap File |
| .g3 |
CCITT Group 3 Fax Image |
| .hdp |
HD Photo File |
| .hdr |
High Dynamic Range Image File |
| .hpi |
Hemera Photo Objects Image File |
| .hdrp |
HDRtist Pro Document |
| .heif |
High Efficiency Image Format |
| .hrf |
Hitachi Raster Format File |
| .hr |
TRS-80 Image |
| .hf |
HF Image |
| .img |
Disc Image Data File |
| .ica |
Configuration file in Citrix application servers |
| .itc2 |
iTunes Cover Flow Data File 2 |
| .ipx |
IPIX Image |
| .ink |
Mimio Ink Data File |
| .info |
Texinfo Document |
| .ivr |
Internet Video Recording |