Free IGES and IGS viewer for Android and Windows

Updated 16 October 2026 By the tool room at Saptasati Industries 3 min read

IGES is older than STEP and still arrives every day from legacy tooling libraries and long-standing suppliers. It usually carries surfaces rather than closed solids, and many files hold only curves: wireframe outlines, trim lines and section profiles. A useful IGES viewer has to handle both.

What PartLens does with an IGES file

• Surface models are meshed and shaded, with their edges.
• Curve-only files — lines, arcs and splines with no surfaces — are drawn as a wireframe instead of an empty screen.
• Measurement on the curves and surfaces, with the exact/approximate label on every number.
• Sections through surface models.

Open an IGES file

1. Get PartLens free from Google Play or as a Windows download.
2. On Android: Tap the file in WhatsApp, Gmail, Drive or your file manager and choose PartLens under Open with, or open PartLens and tap Open.
3. On Windows: Install the free Windows app, then double-click the file, drag it onto the window, or use Open CAD….

Nothing is uploaded: the file is read on your device, with no account.

Gaps between faces are normal

IGES files often store loose surfaces rather than a sealed solid, so small gaps between faces are the format's nature, not a broken file. Weight and volume need a closed solid; for those, ask for a STEP file.

Frequently asked questions