Online IGES File Viewer
View IGES CAD files online without software installation with Vega3D.
How to View an IGES File Online
Open and inspect any IGES file in three simple steps no software install and no signup needed.
Upload Your IGES File
Drag and drop your .iges file or click to browse. Your IGES file, up to 50MB, is processed right in your browser.
View & Interact
Your IGES file appears in seconds. Orbit, pan and zoom with your mouse or touch to examine it from any angle.
Inspect Every Detail
Switch to wireframe, toggle the reference grid, reset the view, and check the vertex and face counts in the model info panel.
Why Use the Vega3D IGES Viewer
A fast, private and free way to open IGES files right in your browser.
Your Files Stay Private
Your IGES files are processed locally in your browser and never uploaded to a server, so confidential designs stay with you.
No CAD Software Needed
Open IGES files without installing CAD software or using up a license seat. Everything runs in your browser.
Completely Free
View as many IGES files as you want, with no account, no watermark and no hidden limits.
Works on Any Device
Runs on Windows, Mac, Linux, phones and tablets, right in the browser with full touch controls.
Wireframe & Model Info
Switch to wireframe to reveal the underlying structure, and check vertex and face counts in the built-in info panel.
Legacy CAD Support
IGES surfaces and curves are read with a real CAD kernel, so you can open older exchange files that other tools struggle with.
Use Cases of the IGES Viewer
See how the online IGES viewer helps teams open legacy and cross-system CAD data.
Legacy CAD Data
Open older IGES files from archives and legacy systems that newer tools may not import cleanly.
Surface Models
Inspect the surfaces and curves IGES is commonly used to carry between CAD systems.
Cross-System Exchange
Check IGES data received from a partner running a different CAD package.
Manufacturing Handoff
Review geometry before passing it on to CAM, tooling or fabrication.
Archive Inspection
Quickly see what an archived IGES file contains without restoring old software.
CAD Education
Explore IGES files to learn how neutral CAD exchange formats work.
Frequently Asked QuestionsFrequently
Asked
Questions
IGES (Initial Graphics Exchange Specification) is a long-standing neutral CAD format for exchanging surfaces and curves between systems. It predates STEP and is still common for legacy data.
Drag and drop your .iges or .igs file onto the viewer. It is read and rendered right in your browser.
They are the same format, just different extensions. The viewer accepts both.
STEP is newer and generally preferred because it carries solid geometry more reliably. IGES remains useful for older surface data and legacy systems.
No. IGES files are read by an OpenCascade CAD engine running as WebAssembly in your browser, so no CAD license is needed.
The first file initializes the CAD engine (WebAssembly) in your browser. Once it is ready, later files load noticeably faster.
No. The IGES viewer runs entirely in your browser, so there is no CAD software to install and no license seat needed.
No. Your .iges file is processed locally inside your browser, so it never leaves your device. That matters when your designs are confidential.
You can view IGES files up to 50MB. For very large or highly detailed files, close other browser tabs to free up memory for the smoothest performance.
The viewer is for viewing and inspecting only. If you need to change formats, use the Vega3D 3D Converter.
Yes. Because it runs in the browser, you can open and rotate IGES files on a phone or tablet using touch gestures, with no app required.
