| Abbreviation | Definition |
|---|---|
| GIF | Graphical Interchange Format |
| GIFF | Bitmap graphics (GIF87A/GIF89A CompuServe Graphics Interchange Format) |
| GIM | Genigraphics Graphics Link presentation |
| GIS | Bitmap graphics (Erdas gray-scale image) |
| GIW | Presentation (Graph-in-the-Box for Windows) |
| GIX | Genigraphics Graphics Link presentation |
| GKH | Disk Image (VFX SD EPS ASR TS) (Ensoniq) |
| GKS | Graphical Kernel System |
| GL | GALink Script file |
| GL | GRASP Animation Presentation format |
| GLB | Global module in Basic programs |
| GLM | Datafile (Glim) |
| GLO | Auxiliary for for glossary (LaTeX) |
| GLO | Global module in Basic programs |
| GLS | Across Datafile |
| GLY | Microsoft WORD Glossary file |
| GM | Bitmap graphics (Autologic files) |
| GM2 | Bitmap graphics (mode 2 black/white) (Autologic files) |
| GM4 | Autologic mode 4 gray-scale files Bitmap graphics |
| GMD | Game Maker File |