| Extension | OFF |
| Full Name | Object File Format |
| Type | 3D Model |
| Mime Type | text/plain |
| Format | Text |
| Opens With | MeshLab, CAD Assistant |
An OFF file, short for Object File Format, is a plain-text file used to represent the geometry of a three-dimensional object. It serves as a simple and widely-used format to store the spatial information of a 3D model. The OFF file format is not restricted to any specific software or application, making it highly versatile for exchanging geometric data among various 3D modeling and visualization tools.
Typically, an OFF file begins with a header line containing the keyword "OFF" and the number of vertices, faces, and edges in the model. The subsequent lines list the coordinates of each vertex, specifying their 3D positions in space. After that, the faces of the object are defined, where each face references a set of vertex indices that form a polygonal face. The simplicity of the OFF format makes it easy to parse and manipulate, which has contributed to its popularity in computational geometry and computer graphics research.
Despite its ease of use, the OFF file format does have some limitations. Notably, it does not support material properties, color information, or texture mapping, focusing solely on geometric representation. Additionally, it does not include any information about the topology or connectivity of the object. Nevertheless, due to its straightforward structure and widespread acceptance, the OFF file format remains a fundamental and valuable tool for sharing 3D model data across different applications and platforms.
OFF Converter Capabilities
Our OFF converter can both convert from and to OFF files and our developers are working to improve our OFF conversion tools in future versions.When converting 3D Model/Mesh files using our OFF converter we will attempt to convert color materials into a suitable format for use in the converted file.
