What is a .OBJ file?
OBJ is a widely supported 3D model format storing geometry, and optionally materials and texture coordinates. Read by Blender, Maya and most 3D tools.
- Did you know
- OBJ was developed by Wavefront Technologies in the 1990s and is still a universal exchange format.
- OBJ is a human-readable text format that defines geometry with keyword lines, such as “v” for a vertex and “f” for a face.
- It was the native model format of The Advanced Visualizer, software used on films like The Abyss, Terminator 2 and Jurassic Park.
- OBJ survives across nearly every 3D tool today thanks to its sheer simplicity rather than any advanced features.
- Material and texture details are kept separately in a companion MTL file rather than inside the OBJ itself.
- 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 .OBJ file
- Drag a .OBJ 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.