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| Name | OBJ |
| Full name | OBJ geometry format |
| File extension | .obj |
| MIME type | text/plain |
| Developed by | Wavefront Technologies |
| Type of format | |
| Description | OBJ (or .obj) is a geometry definition file format first developed by Wavefront Technologies for its Advanced Visualizer animation package. The file format is open and has been adopted by other 3D graphics application vendors. |
| Technical details | The OBJ file format is a simple data-format that represents 3D geometry alone — namely, the position of each vertex, the UV position of each texture coordinate vertex, vertex normals, and the faces that make each polygon defined as a list of vertices, and texture vertices. Vertices are stored in a counter-clockwise order by default, making explicit declaration of face normals unnecessary. OBJ coordinates have no units, but OBJ files can contain scale information in a human readable comment line. |
| Associated programs | Wavefront 3D, CADRazor, Adobe Photoshop, LogiKal, UVMapper, LightWave 3D, Autodesk Maya, IMSI TurboCAD Deluxe, MeshLab, MAXON Cinema 4D, Smith Micro Poser, Autodesk AutoCAD. |
| Wiki | https://en.wikipedia.org/wiki/Wavefront_.obj_file |