| wbmp | Wireless Bitmap Image |
| wbp | Webshots Photo Pack |
| wbz | Webshots Image |
| wci | Wavelet Bitmap Image |
| wdp | JPEG XR Image |
| webp | WebP Image |
| wgi | WildGame Innovations Digital Camera Photo |
| wi | J Wavelet Image Codec Bitmap |
| wic | J Wavelet Image Codec Bitmap |
| wif | CoffeCup Web Image Studio Document |
| wig | Commodore 64 Wigmore Artist 64 Image |
| wki | Lexmark Photo Center Document |
| wlm | CompW Bitmap |
| wmf | Windows Metafile |
| wmp | Windows Media HD Photo |
| wnd | Atari 8-bit Blazing Paddles Window Image |
| wpb | OpenCanvas 1.0 Image |
| wpe | OpenCanvas 1.1 Event |
| wpg | Corel WordPerfect Graphics Metafile |
| wpg2 | Corel WordPerfect Graphics Metafile |
| wsq | Wavelet-packet Scalar Quantization Bitmap |
| x | Stardent AVS X Image |
| x11 | X Window Dump |
| x3f | Sigma RAW Image |
| xar | Xara Drawing |
| xb | XBin Image |
| xbm | X Bitmap Image |
| xcf | Gimp Image |
| xfx | OAZ Fax Image |
| xga | Atari Falcon XGA Image |
