Форматы, которые поддерживает Xnview
| Название формата | Расширения | Разрешение | Сжатие |
| JPEG | jpg jpeg jif jfif J | grey, 24 bits | |
| TrueVision Targa | tga pix bpx vda icb vst | grey, 256 colors, 15 bits, 16 bits, 24 bits, 32 bits | Packbits (1) |
| TDI Explore / Alias Wavefront | tdi iff | grey, 24 bits, 32 bits | |
| Softimage bitmap | pic si | 24 bits, 32 bits | Packbits (1) |
| RGB Silicon | rgb bw iris sgi | grey, 256 colors, 16 millions | Packbits (1) |
| TIFF Revision 5 | tif tim tiff | binary, grey, 16 colors, 256 colors, 24 bits | Packbits (1) Lzw (2) Lzw & Prediction (3) |
| Vista | vst | 256 colors, 15 bits, 24 bits, 32 bits | |
| Sun Raster Images | ras sun | binary, grey, 256 colors, 24 bits, 32 bits | |
| Macintosh Pict | pic pict pct | binary, 16 colors, grey, 256 colors, 24 bits, 32 bits | |
| Alias | pix als alias | grey, 24 bits | |
| Windows 3 Bitmap | bmp rle dib | binary, 16 colors, grey, 256 colors, 24 bits, 32 bits | Rle (1) only for 4 & 8 bits |
| Amiga IFF | iff blk lbm | binary, grey, 16 colors, 256 colors, 24 bits, 32 bits | Packbits (1) |
| Portable Network Graphics | png | binary, grey, 16 colors, 256 colors, 24 bits, 32 bits | |
| CompuServe GIF | gif giff | binary, 16 colors, 256 colors | |
| Zsoft Paintbrush | pcx pcc dcx | binary, 16 colors, grey, 256 colors, 24 bits | Packbits (1) |
| Zsoft Multi-page Paintbrush | dcx | binary, 16 colors, grey, 256 colors, 24 bits | |
| Portable Image | ppm pgm pbm pnm rppm rpgm rpbm rpnm | binary, grey, 24 bits | |
| Wavefront file format | rla rlb | 24 bits, 32 bits | |
| Sun TAAC file format | s iff vff suniff taac | Type 256 couleurs, 24 & 32 bits | |
| Utah Raster image | s rle | Type grey, 256 couleurs, 24 & 32 bits | |
| Pixar picture file | s pic pxr picio pixar | Type grey, 24 & 32 bits | |
| ImageMagick | mif miff | grey, 256 colors, 24 & 32 bits | |
| Adobe Photoshop Document | psd | grey, 256 colors, 24 & 32 bits | |
| Paint Shop Pro | psp | binary, 16 colors, grey, 256 colors, 24 & 32 bits | |
| YUV 16Bits Secam | yuv qtl | 24 bits (720x486) | |
| YUV 16Bits Interlaced Secam | yuv qtl | 24 bits (720x486) | |
| YUV 16Bits Pal | yuv qtl | 24 bits (720x576) | |
| YUV 16Bits Interlaced Pal | yuv qtl | 24 bits (720x576) | |
| Digital Research (GEM Paint) | img | binary, 16 colors, grey, 256 colors | |
| DKB Ray-tracer / Qrt | dis qrt | 24 bits | |
| Cloe raytracer | clo | 32 bits | |
| Vivid | img | 24 bits | |
| MTV / Rayshade | pic | 24 bits | |
| CP8 256 gray scale | cp8 | grey | |
| ImageSpeeder | ish | grey | |
| X BitMap | xbm bm | binary | |
| X PixMap | xpm pm | colors | |
| Sun Icon/Cursor | icon cursor pr | binary | |
| Windows Icon | ico | colors | |
| Windows Cursor | cur | binary | |
| Windows Clipboard | clp | colors, 15-32 bits | |
| PM | pm | grey, 24 & 32 bits | |
| Flexible Image Transport Systeme | fits fts | grey | |
| Photo CD | pcd | 24 bits | |
| Gimp Brush | gbr | grey | |
| Gimp Pattern | pat | grey, 24 bits | |
| Gimp Icon | ico | grey | |
| Psion Series 3 | pic | binary | |
| Psion Series 5 | mbm | binary, grey(4) | |
| Palm Pilot | pdb | binary, grey(4) | |
| HP-48 Grob | gro grb | binary, grey(4), grey(8) | |
| Degas / Degas Elite | pi1 pi2 pi3 pc1 pc2 pc3 | binary, 16 colors | |
| Neochrome | neo | 16 colors, 256 colors | |
| ZZ Rough | rgh | 16 colors | |
| Dali raw | sd0 sd1 sd2 | binary, 16 colors | |
| Stad | pic pac seq | binary | |
| GFA Raytrace | sul | 512 colors | |
| Spectrum 512 | spu | 512 colors | |
| Spectrum 512 compressed | spc | 512 colors | |
| Spectrum 512 smooshed | sps | 512 colors | |
| ColoRIX | rix sc? | 16 and 256 colors | |
| X Windows System window dump | xwd x11 | binary, 16 colors, 256 colors, grey, 24 bits | |
| PC Paint / Pictor Page | pic clp | binary, 16 colors, 256 colors | |
| ImageLab | b&w b_w | grey | |
| Microsoft Paint | ??? | 24 bits | |
| Calamus picture | cpi | binary | |
| Bob | bob | 256 colors | |
| Dr Halo | cut | grey, 256 colors | |
| DBW Render | ??? | 24 bits | |
| Handy Scaner Cameron | pic | binary | |
| Stardent AVS X | x avs mbfs mbfavs | 24 bits | |
| AIM Grey Scale | ima | grey | |
| Mac Paint | mac mpnt | binary | |
| Tiny | tny tn1 tn2 tn3 | bianry, 4 colors, 16 colors | |
| Doodle | doo | binary | |
| Art Director | art | 16 colors |