Best Free Online 3D Viewer in 2026: STEP, GLB, FBX Compared

A roundup of the best free online 3D viewers in 2026. Criteria: supported formats, sharing, privacy and ease of use.

Looking for a free online 3D viewer to open or share CAD files without installing software? In 2026, the options are plentiful — but they aren't all equal depending on your needs. Here's an honest comparison.

Criteria for choosing an online 3D viewer

• Supported formats: does it handle STEP, IGES, GLB, FBX, OBJ natively?
• Sharing: can you send a link that opens without an account?
• Privacy: are files private by default?
• Free plan: what are the limits on storage and model count?
• Hosting: EU-based for GDPR compliance?

OmniView 3D — the most complete for B2B

OmniView 3D is built for professionals sharing industrial CAD files. It natively supports STEP, IGES, GLB, FBX, OBJ and STL. The free plan includes 3 models, 100 MB, and shareable links with no account required on the recipient side. Models are hosted in the EU.

Sketchfab — best for 3D artists

Sketchfab is the reference for 3D creators (games, animation, AR). It does not support native CAD formats (STEP, IGES). Models are public by default, which is a problem for confidential files. Free up to 300 MB.

Autodesk Viewer — good within the Autodesk ecosystem

Autodesk Viewer opens native Autodesk formats (RVT, DWG, IPT) as well as STEP. Limitation: recipients often need to create an Autodesk account to access the link. Hosted on US servers.

eDrawings — SolidWorks specialist

eDrawings is the official SolidWorks viewer. Very good for SLDPRT and SLDASM files, but requires a .exe installation which corporate email filters often block. The mobile app exists but the web experience remains limited.

Our recommendation

If you're sharing industrial CAD files (STEP, IGES) with clients or subcontractors without a license, OmniView 3D is the best fit in 2026: zero friction for recipients, EU hosting, and a generous free plan to start.