File formats: O
Every format whose extension starts with O.
Formats
| Format | Name | About | Main software | |
|---|---|---|---|---|
.OBJ | Wavefront OBJ | A plain text mesh of vertices, normals and faces, read by almost every 3D program. | Blender | DocumentedViewerEditorOpen |
.OBJ | COFF object file | Compiled code from Windows compilers, waiting for the linker. | Visual Studio | DocumentedViewerEditorOpen |
.OBJ | Object files (OMF and COFF) | Two object file formats share .obj on DOS and Windows: OMF and COFF. | DocumentedViewerEditorOpen | |
.OBJ | OMF object file | Intel’s object format for 16-bit DOS and Windows compilers, in typed records. | Open Watcom | DocumentedViewerEditorOpen |
.ODP | OpenDocument Presentation | The open standard presentation: slides as XML pages in a ZIP package. | LibreOffice Impress | DocumentedViewerEditorOpen |
.ODS | OpenDocument Spreadsheet | The open standard spreadsheet: tables of cells as XML in a ZIP package. | LibreOffice Calc | DocumentedViewerEditorOpen |
.ODT | OpenDocument Text | The open standard word processing document: XML parts in a ZIP package. | LibreOffice Writer | DocumentedViewerEditorOpen |
.OFF | Object File Format | Geomview’s plain text mesh: counts, vertex positions, then faces. | MeshLab | DocumentedViewerEditorOpen |
.OGG | Ogg Vorbis audio | Open lossy audio: Vorbis packets carried in a sequence of Ogg pages. | VLC media player | DocumentedViewerEditorOpen |
.ONNX | Open Neural Network Exchange | A neural network’s graph and weights in one Protocol Buffers message. | ONNX Runtime | DocumentedViewerEditorOpen |
.OPUS | Opus audio in Ogg | Open low-latency codec for speech and music, in Ogg pages. | VLC media player | DocumentedViewerEditorOpen |
.ORA | OpenRaster | An open layered image format: PNG layers and an XML stack in a zip. | MyPaint | DocumentedViewerEditorOpen |
.ORF | Olympus raw image | Olympus and OM System raw photos, a TIFF-like file with its own header. | Adobe Lightroom | DocumentedViewerEditorOpen |
.ORG | Org mode document | Emacs Org mode’s plain text outlines: headlines, tasks, tables and code blocks. | GNU Emacs | DocumentedViewerEditorOpen |
.OTF | OpenType font | The TrueType container extended with PostScript outlines and typographic features. | Font Book | DocumentedViewerEditorOpen |
.OTIO | OpenTimelineIO timeline | An open JSON timeline: stacks of tracks holding clips, gaps and transitions. | DaVinci Resolve | DocumentedViewerEditorOpen |
.OUT | Unix a.out executable | The original Unix executable: a 32-byte header, text, data and symbols. | GNU Binutils | DocumentedViewerEditorOpen |
.OXPS | OpenXPS document | The Ecma standard form of XPS, saved by Windows 8 and later. | XPS Viewer | DocumentedViewerEditorOpen |