| kid | Atari ST Fullscreen Construction Kit Image |
| kid2 | Kid Pix 2 Drawing |
| kids | Kid Pix Drawing |
| kif | Kt Interchange File Format Bitmap |
| kiff | Kt Interchange File Format Bitmap |
| kla | Koala Paint Image |
| kmg | Sega Dreamcast Uncompressed Image |
| koa | Koala Paint Image |
| kodak | Kodak Photo CD |
| kpg | KPT Goo Graphic |
| kpr | Atari 8-bit Compressed Animation Data |
| kps | IBM Kips Bitmap |
| kqp | Konica Camera Image |
| kra | Krita Image |
| kraw | Mac OS X Kernel Loadable RAW Image |
| krita | Krita Image |
| kro | Kolor Raw Image |
| krz | Krita Compressed Image |
| kss | Atari 8-bit KSS-Paint Image |
| kuva | Kuvio Matrix Camera RAW Image |
| lbm | Deluxe Paint Bitmap |
| lce | ZX Spectrum 128 Laced Screen Bitmap |
| lda | LaserData Fax Image |
| ldm | Atari 8-bit Ludek Maker Image |
| VolumeViz Multi-Resolution Volume |
| leo | Atari 8-bit Larka Editor Object |
| lerc | LERC Image |
| lfp | Lytro Lightfield Camera RAW Image |
| lfr | Lytro Illum Camera RAW Image |
| lgo | OS/2 Warp Boot Logo |
| lif | Homeworld Texture |
| Leica Image File |
| lim | Laboratory Imaging LIM Image |
| linea | Linea Sketch Drawing |
| lip | Clip Studio Old Paint |
| livp | iPhone Live Photo |
| lj | HP LaserJet Vector Image |
| ljp | Lossless JPEG Image |
| ljpg | Lossless JPEG Image |
| ljs | Lossless JPEG Image |
| ln03 | DEC LN03+ Sixel graphics file |
| lnd | 3D Landscape Design |
| lp3 | C64 Logo Painter 3 Image |
| lpk | Atari ST Compressed Dali Image |
| lrg | Macromedia XRes Multi-resolution Bitmap |
| lri | Light L16 Raw Image |
| lris | Light L16 Sidecar Data |
| lrprev | Adobe Photoshop Preview |
| lsi | LightScribe Image File |
| lsm | Zeiss LSM Image |
| lss | LSS16 Format Image |
| lss16 | LSS16 Format Image |
| lum | Atari 8-bit Technicolor Dream Image |
| lv | Lazer View Image |
| lvp | LView Pro Multi Layer Image |
| lw | Line Work TIFF Image |
| lwf | Luratech Wavelet Compressed Image |
| lwi | Light Work Image |
| lzp | LazPaint Image |
| mac | MacPaint Image |
| macp | MacPaint Image |
| mag | MAKIchan Graphics |
| map | Atari 8-bit Envision Image |
| mas | Lotus Freelance Graphics Smartmaster File |
| max | Atari 8-bit XL-Paint MAX Image |
| PaperPort Image |
| TRS-80 MAX Image |
| mbfavs | Stardent AVS X Image |
| mbfs | Stardent AVS X Image |
| mbfx | Stardent AVS X Image |
| mbg | Atari 8-bit Mad Designer Image |
| mbm | Symbian MultiBitmap |
| mc | ZX Spectrum Multicolor Image |
| mch | Atari 8-bit Graph2Font Image |
| mci | Commodore 64 True Paint Image |
| mcp | Atari 8-bit McPainter Image |
| mcpp | Atari 8-bit Paradox Image |
| mda | MicroDesign Area Data |
| mdc | Minolta MDC RAW Image |
| mdi | Microsoft Office Document Imaging File |
