| .X-PNG | The Pixelmator Team | Fişiere de imagini rastru | Portable Network Graphics | Adobe Illustrator CC | Adobe Systems Incorporated |
| .X10 | X.Org Foundation | Fişiere de imagini rastru | X Window Bitmap Dump File | X Window System | X.Org Foundation |
| .X11 | X.Org Foundation | Fişiere de imagini rastru | X Windows System Bitmap Image | X Window System | X.Org Foundation |
| .XBM | Unknown Developer | Fişiere de imagini rastru | X11 Bitmap Graphic | GIMP | The GIMP Development Team |
| .XBX | Microsoft Corporation | Fişiere de imagini rastru | Xbox Icon Or Picture | Microsoft XBOX | Microsoft Corporation |
| .XCF | Gimpel Software | Fişiere de imagini rastru | GIMP Image File | GIMP | The GIMP Development Team |
| .XIM | Open Source | Fişiere de imagini rastru | X11 Xim Toolkit Bitmap Format | XnView MP | XnSoft |
| .XOS | Xaos Tools | Fişiere de imagini rastru | Xaos Tools Bitmap Image | Unknown Software | Unknown Developer |
| .XPM | XnSoft | Fişiere de imagini rastru | X11 Pixmap Graphic | GIMP | The GIMP Development Team |
| .XV | AccuSoft Corporation | Fişiere de imagini rastru | Khoros Visualization Image | VisiQuest (Khoros) | AccuSoft Corporation |
| .XWD | Pierre-Emmanuel Gougelet | Fişiere de imagini rastru | X Windows Dump Image | GIMP | The GIMP Development Team |
| .XYS | Donald Lessau | Fişiere de imagini rastru | XYplorer Script File | XYplorer | Donald Lessau |
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