Fast and lightweight
Open large models quickly with our optimized WebGL viewer.
Free online 3D model viewer
Quickly view, inspect, and share 3D files in your browser — no installation required.
Loading model…
Faces: —Vertices: —
Best to view, inspect and share 3D models
No account required
Start viewing instantly — no sign-up or login needed.
Multiple formats
Support for GLB, GLTF, OBJ, STL, FBX, PLY and more.
Measure and inspect
Inspect mesh stats, materials, and model properties.
How to open and inspect 3D models online
- 1
Upload
Drag & drop or choose a 3D file from your device.
- 2
Interact
Rotate, zoom, and pan with intuitive mouse controls.
- 3
Analyze
View triangles, vertices, materials and bounding box.
- 4
Share
Share a link or export screenshots of your model.
Fast3D vs. Other online 3D Viewers
| Feature | Fast3D | Others |
|---|---|---|
| 100% Free | Yes | No |
| Privacy focused | Yes | No |
| No file size limit | Yes | No |
| No account required | Yes | No |
| Animation support | Yes | Yes |
FAQ
Common questions about our free online 3D model viewer.
What 3D formats are supported?
We support GLB, GLTF, OBJ, STL, FBX, PLY, 3DS, and DAE formats. More formats are added regularly.
Is it free to use?
Yes, Fast3D is completely free with no hidden fees or account requirements.
Are my files uploaded to a server?
No. Files are processed locally in your browser for maximum privacy.
Which browsers are supported?
Any modern browser with WebGL support — Chrome, Firefox, Safari, and Edge.
Is there a file size limit?
There is no hard limit. Performance depends on your device and browser memory.