What is a .OFF file?
OFF (Object File Format) is a simple 3D mesh format storing polygons.
- Did you know
- OFF is a long-standing teaching and research mesh format from the early 1990s.
- OFF stands for Object File Format and was developed for Geomview, the 3D viewer from the Geometry Center at the University of Minnesota.
- An OFF file starts with the keyword “OFF” followed by counts of vertices, faces and edges, then lists the coordinates and faces.
- It is a plain, text-based mesh format favoured in teaching and research for its clarity and platform independence.
- Many models in the Princeton Shape Benchmark are distributed as OFF files, a staple of geometry research.
- What Analyser shows you
- View STL, OBJ, PLY, OFF, STEP, IGES, BREP, 3MF and AMF models in an interactive WebGL viewer with triangle count, bounding box, surface area and volume. STEP/IGES/BREP are tessellated with OpenCASCADE and STEP shows its originating CAD system, version and AP203/214/242 protocol; 3MF and AMF let you inspect each model and assembly on the build plate individually.
- Open a .OFF file
- Drag a .OFF file onto the Analyser home page (or tap to pick one). It opens entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.