Convert IGS to OBJ
Convert a IGS file to OBJ in your browser. Free, no upload, no sign-up.
Convert IGS files to OBJ directly in your browser. The converter reads the exact IGS geometry with the OpenCascade CAD kernel running in WebAssembly, tessellates it at the quality you choose and writes a OBJ file. Nothing is uploaded, there is no file size limit beyond your computer's memory, and the result downloads instantly. OBJ keeps groups and UV coordinates and opens in every modelling tool, which makes it a good format for editing or texturing a model.
How to convert IGS to OBJ
- 1Drop your IGS file
Drag a .igs file onto the box above or click to choose one. Surfaces are sewn and tessellated with OpenCascade in the browser.
- 2Pick the mesh quality
Fine gives smoother curves and a larger file, coarse keeps large assemblies light. The default suits most 3D printing jobs.
- 3Check the preview
The model renders in 3D so you can confirm it loaded correctly. Dimensions, volume and triangle count are shown next to it; open edges are flagged if the mesh is not watertight.
- 4Download the OBJ
Adjust the export options if needed and click download. A .mtl material file is not generated; the exported OBJ contains geometry, normals and UVs only.
What is a IGS file?
.igs is the short extension for an IGES file. The content is identical to .iges: curves and surfaces from a CAD system, without the solid topology that STEP provides.
Commonly used by: legacy CAD, supplier archives
Surfaces are sewn and tessellated with OpenCascade in the browser.
What is a OBJ file?
OBJ is a plain-text mesh format from Wavefront. It stores vertices, normals, UV texture coordinates and face definitions, and references materials through a companion .mtl file. It is human-readable and supported by virtually every 3D modelling application.
Commonly used by: Blender, Maya, ZBrush, game engines, photogrammetry tools
OBJ keeps groups and UV coordinates and opens in every modelling tool, which makes it a good format for editing or texturing a model.
IGS vs OBJ
| IGS | OBJ | |
|---|---|---|
| Full name | IGES file (.igs extension) | Wavefront OBJ |
| Encoding | Text | Text |
| Geometry type | Exact (B-rep / curves) | Triangle mesh |
| Colors | Yes | No |
| Textures | No | Yes |
| Materials | No | Yes |
| Stores units | Yes | No |
| Multiple objects | Yes | Yes |
| Typical use | legacy CAD, supplier archives | Blender, Maya, ZBrush |