The free online 3D viewer for GLB, GLTF, FBX, STL, OBJ, PLY, 3MF

Drop a 3D file below to open it instantly in your browser. No upload, no account, no install. Your files never leave your device.

Drop a 3D file here

or · max 500 MB

GLBGLTFSTLOBJFBXPLY3MF

A clean replacement for Microsoft 3D Viewer, which is ending support on June 30, 2026.

Every 3D file format you need, in one place

No more searching for "GLB viewer online" then "FBX viewer online" then "STL viewer online". Open3D handles all of them with the same engine.

GLB

The modern glTF 2.0 binary format. The de-facto standard for the web, AR, and game pipelines.

GLTF

Text-based glTF 2.0 with separate textures. We load referenced .bin and texture files alongside.

FBX

Autodesk's animation-heavy format. We open FBX — Microsoft 3D Viewer blocks it by default.

STL

The 3D printing workhorse. Both ASCII and binary STL are supported.

OBJ

Wavefront's classic. We auto-load referenced .mtl materials when present.

PLY

Stanford polygon format — point clouds and photogrammetry reconstructions.

3MF

Microsoft's print-ready format. Geometry plus material assignments in one container.

More than a quick preview

Measure distances

Click any two points on the model to get the real-world distance, pinned to the line in 3D space.

Cross-section

Slice the model along any axis to peek inside walls, casings, and complex assemblies.

Real-scale grid

Optional ground grid with distance labels in metres / centimetres along every edge.

Print-readiness

Quick health check for STL and OBJ files before you slice them for 3D printing.

Render modes

Solid, wireframe, X-ray, textured. Switch instantly to inspect mesh topology or final shading.

HDRI environments

Studio, sunset, neutral, dark. Real-world lighting that flatters PBR materials.

Screenshot & GIF

Capture a still or a 60-frame turntable GIF with one click — handy for share links.

100% offline

Zero network requests. Your files load into your browser memory and stay there.

Also available as native apps

Want offline access, file associations, and faster performance? Install the native app for your platform — same engine, same features.

iOS iPhone & iPad App Store → Android Phone & tablet Google Play → Windows Windows 10 & 11 Microsoft Store →

Frequently asked questions

Is Open3D Viewer free?
Yes. Free in the browser, free on iOS, free on Android, free on Microsoft Store. No account, no sign-in.
Does Open3D Viewer support FBX?
Yes. We open FBX directly in the browser. Microsoft 3D Viewer blocks FBX by default; we don't.
Are my 3D files uploaded anywhere?
No. The viewer is fully client-side. Files are read into your browser's memory using the standard FileReader API and are never transmitted to any server.
What file size can I open?
Up to ~500 MB depending on your device. Browser WebGL has memory limits; the native apps handle up to 2 GB.
Is this a replacement for Microsoft 3D Viewer?
Yes. Microsoft is ending support for Microsoft 3D Viewer on June 30, 2026. Open3D Viewer runs in any modern browser and is also packaged for the Microsoft Store as a native Windows app.
Does it work on Mac and Linux?
Yes — the web viewer works on any modern browser (Chrome, Edge, Firefox, Safari) on any operating system.
Can I use this commercially?
Yes. Open3D Viewer is free for personal and commercial use. The underlying three.js engine is MIT-licensed.