Open igs file

igs file icon Did your computer fail to open igs file? We explain what igs files are and recommend software that we know can open your igs files.

What is igs file?

An igs file extension can be found as 3D graphics data saved in International Graphics Exchange Standard (IGES) format used for data exchange.

igs file description

The .igs file contains IGES 2S or 3D CAD model.

The igs file extension is commonly referring to files in International Graphics Exchange Standard (IGES), an ANSI-approved standard format used with 3D wire frame models originally created in 1979.

One must be very careful when sourcing CAD files from all of today's modern CAD packages, as most/many of them export the long-obsolete "Surfaces NURBS" variation (few people know these differences).

There are 3 primary versions of IGES:

The 1980's "Bounded Surfaces", the 1990s "Surfaced NURBS" and the 2000's modern "BREP Manifold Solids".

One should only export an IGES file in the latter "BREP Manifold Solids" version of IGES. If you try to convert via "Surfaced NURBS" (which has no BREP topology) then the model will be exploded into thounsads of individual NURBS patches, leading to patch cracking, flipped or randomly oriented surfaces, inverted vertex normals (for smoothing) and black banding effects.

People on forums often complain that IGES is not a good CAD conversion file format but that is only because they are using the wrong version and/or poor 3D IGES importers.

Note: IGES files are limited to a file size of 2GB due to their limited internal numeric range.

MIME types:

Software that will open igs file


A 2D and 3D CAD construction software


A PLM/CAD/CAM/CAE software suite


Leading 2D and 3D CAD development software from Autodesk

Other igs file extensions

igs - Indigo Renderer scene

Files with igs file suffix are related to the Indigo Renderer scene format.

What file extension actually is?

Simply put, file extensions are the characters after the dot in the file name, so for example filename.mp3 has file extension „mp3“. This helps Windows to identify which program should be used to open the file.

We can help you to open your file

Our database contains a huge list of different file extensions, usually with detailed description and programs that can be used to open or otherwise work with that particular file type.

Only original software

Every software listed in our database is verified and ve provide link to the developer or to the software own website, which should hopefuly be enough for you to download the most recent version of the program.