.IGS File Extension

An IGS file is a graphics file saved in a 2D/3D vector format based on the Initial Graphics Exchange Specification (IGES). It can store wireframe models, surface or solid object representations, circuit diagrams, and other objects. IGS files are used by many CAD programs as a standard ASCII text-based format for saving and exporting vector data.

You can open IGS files with various desktop CAD programs, such as Autodesk Fusion 360 (Windows), Dassault Systemes CATIA (multiplatform), Nemetschek VectorWorks (multiplatform), and CADEX CAD Exchanger (macOS). You can also open and view IGS files with online viewers by uploading them to CADEX CAD Exchanger Cloud or ShareCAD.org.

Since IGS files store plain text information they can be opened with a text editor. However, when viewing the files with a text editor, the contents will appear as text instead of a visual representation of a model, like when viewed with CAD software. You can use Microsoft Wordpad, which is bundled with Windows, or Apple TextEdit, which is bundled with macOS, to view the plain text in IGS files.

How do I convert an IGS file?

Most CAD applications that can open IGS files can also convert them to other formats. For example, CAD Exchanger can open IGS files and convert them to another format, such as .STP, .STEP, .SAT., .STL, .BREP, or .JT.

3D scene used by Indigo Renderer, an application used for generating photorealistic images; often saved as an export from another 3D modeling package that has the Indigo Renderer plug-in, including Blender, 3ds Max, Cinema 4D, Maya, SketchUp, or Revit.

Once a 3D scene has been imported into Indigo Renderer, it can be rendered into a final image. The software supports GPU acceleration so that images can be generated more quickly.