File formats: I
Every format whose extension starts with I.
Formats
| Format | Name | About | Main software | |
|---|---|---|---|---|
.ICL | Windows icon library | Many Windows icons as resources in a 16-bit NE library with no code. | Windows | DocumentedViewerEditorOpen |
.ICNS | Apple Icon Image | macOS application icons, one picture in many sizes, mostly as PNG. | Preview | DocumentedViewerEditorOpen |
.ICO | Windows icon | Windows icons and cursors: one picture in several sizes, as bitmaps or PNGs. | GIMP | DocumentedViewerEditorOpen |
.ICO | OS/2 colour icon (CI) | A colour OS/2 icon: a 1-bit mask bitmap followed by a colour image. | ArcaOS | DocumentedViewerEditorOpen |
.ICO | OS/2 icon (IC) | A black and white OS/2 icon: AND and XOR masks in one 1-bit bitmap. | ArcaOS | DocumentedViewerEditorOpen |
.ICS | iCalendar | Calendar events, to-dos and time zones as text content lines. | Google Calendar | DocumentedViewerEditorOpen |
.IDX | VobSub subtitles | Ripped DVD subtitles: a text index pointing into a .sub file of images. | Subtitle Edit | DocumentedViewerEditorOpen |
.IFC | Industry Foundation Classes | The open BIM standard: a building as walls, slabs and spaces, in STEP text. | Autodesk Revit | DocumentedViewerEditorOpen |
.IFF | Interleaved Bitmap (IFF ILBM) | Amiga and Deluxe Paint pictures, stored as interleaved bitplanes. | GrafX2 | DocumentedViewerEditorOpen |
.IGES | Initial Graphics Exchange Specification | The 1980 neutral CAD format, in 80-column lines split into five sections. | FreeCAD | DocumentedViewerEditorOpen |
.IMG | GEM Image | GEM desktop bitmaps for PC and Atari ST: a word header and run-length planes. | RECOIL | DocumentedViewerEditorOpen |
.IMG | Raw disk image | A disk or memory card copied byte for byte, with no header. | Raspberry Pi Imager | DocumentedViewerEditorOpen |
.IML | IntelliJ IDEA module | A JetBrains IDE module’s source folders and dependencies, as XML. | IntelliJ IDEA | DocumentedViewerEditorOpen |
.INFO | Amiga Workbench icon | Amiga icons: the picture and Workbench settings for the file of the same name. | Workbench | DocumentedViewerEditorOpen |
.IPYNB | Jupyter notebook | Code, notes and saved results as cells in a JSON document. | JupyterLab | DocumentedViewerEditorOpen |
.ISM | Smooth Streaming server manifest | Smooth Streaming’s server-side SMIL file naming the media files and tracks. | Unified Streaming | DocumentedViewerEditorOpen |
.ISMC | Smooth Streaming client manifest | Microsoft Smooth Streaming’s player manifest: XML tracks, qualities and chunks. | VLC media player | DocumentedViewerEditorOpen |
.ISO | ISO 9660 disc image | A CD, DVD or Blu-ray copied sector by sector into one file. | Windows File Explorer | DocumentedViewerEditorOpen |
.IT | Impulse Tracker module | 64-channel tracker song with enveloped instruments, filters and packed patterns. | OpenMPT | DocumentedViewerEditorOpen |
.IVF | IVF video stream | Raw VP8, VP9 or AV1 frames behind a 32-byte DKIF header. | FFmpeg | DocumentedViewerEditorOpen |