Online IGES & IGS CAD Viewer
Inspect industrial IGES CAD surface and curve models directly in your browser. Powered by OpenCascade WebAssembly with 100% privacy.
Drag & drop your IGES / IGS file here
or click below to select from your device (100% private, zero uploads)
IGES / IGS Technical Specifications & Guidelines
In-depth technical reference for Initial Graphics Exchange Specification CAD.
| Supported Extensions | .iges, .igs |
| Format Category | Legacy CAD & Aerospace |
| File Encoding | Fixed-length 80-character ASCII punch-card records (Sections S, G, D, P, T) |
| Compatible CAD & 3D Software | CATIA, Siemens NX, SolidWorks, Rhino 3D, Mastercam, AutoCAD |
| Standard | US National Bureau of Standards IGES Version 5.3 |
| Geometry Engine | OpenCascade Technology (OCCT) WebAssembly Kernel |
| Entity Types | Trimmed parametric surfaces, bounded surfaces and B-Spline surfaces (tessellated to meshes) |
| Privacy | Zero cloud transit; CAD mathematics run entirely in local browser RAM |
IGES / IGS Frequently Asked Questions
Everything you need to know about opening, inspecting, and converting IGES / IGS files in your browser.
What is an IGES file and why is it used in aerospace/tooling?
IGES (Initial Graphics Exchange Specification) is a foundational CAD data exchange format widely used in aerospace, automotive, and die tooling to exchange curved surfaces and wireframes between differing CAD suites like CATIA, NX, and Mastercam.
Can I convert an old IGES file to GLB or 3D printable STL?
Yes. Once Universal 3D Viewer triangulates the IGES surfaces into clean 3D polygons, you can export the model directly to binary GLB or STL with a single click.
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