Free IGES (.iges, .igs) to GLB (.glb) converter — running entirely in your browser. No upload, no signup, no file limits: your files never leave your device.
STEP · IGES · BREP · STL · OBJ · PLY · GLB · glTF · 3MF · COLLADA · AMF · FBX · 3DS · OFF · LAS · PCD · XYZ · PTS
IGES is one of the oldest neutral CAD exchange formats, dating back to 1980. It represents models as surfaces and curves rather than watertight solids, and although STEP has largely replaced it, IGES files remain everywhere in legacy archives, tooling data and supplier exchanges.
GLB is the single-file binary packaging of glTF, the "JPEG of 3D". One file carries geometry, materials, textures and animations, optimized for fast GPU loading. It is the standard for web 3D, AR on Android, e-commerce product viewers and real-time applications.
| IGES | GLB | |
|---|---|---|
| Geometry | B-rep surfaces & curves | GPU-ready triangle mesh |
| Units | Yes, embedded | Meters by spec |
| Colors & materials | Limited | Full PBR materials |
| Animations | No | Yes |
| Typical use | Legacy CAD exchange | Web, AR & real-time delivery |
Yes — free with no accounts, no watermarks and no file-size limits. Conversion runs on your own machine, so there are no server costs behind it.
No. The converter runs entirely in your browser using WebAssembly. Your .iges file never leaves your device, which makes it safe for confidential designs.
IGES stores exact CAD surfaces, which are tessellated into triangles at a quality you choose — from fast drafts to near-exact precision meshes. Preview the result in the built-in 3D viewer before downloading.
Yes. Every converted model opens in the built-in 3D viewer with an assembly tree, display modes and section views, so you can inspect the result first.
IGES stores exact boundary surfaces, but every output available here is a triangle mesh. Tessellation is irreversible: feature history, constraints and analytic curves cannot be recovered from the converted file. The GLB result contains the converted geometry, hierarchy and flat colors, but it cannot recreate texture maps or animation that were dropped on import.
IGES and STEP both move CAD data between systems, but they are generations apart. When IGES still appears, why STEP usually wins, and how to convert both for free.
What do tessellation quality settings actually control? Linear and angular deflection explained with practical presets for 3D printing, rendering and web delivery.
Which 3D format should you ship on the web? A practical comparison of glTF, GLB and OBJ — file size, materials, loading speed — with free conversion tools.