What is a 3MF file?
3MF is a modern 3D manufacturing format designed to store mesh geometry together with information such as units, colors, materials, components, and print-related metadata.
CAD & 3D
3MF Viewer
Open and view 3MF files online in an interactive 3D viewer. Inspect objects, components, instances, dimensions, and print geometry locally.
Tool
3MF Viewer
Open and view 3MF files online in an interactive 3D viewer. Inspect objects, components, instances, dimensions, and print geometry locally.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this free online 3MF Viewer to inspect 3MF files before printing, converting, or sharing them. Rotate and zoom the model, review its dimensions, and inspect multiple objects, reusable components, and object instances when they are present. Unlike STL, the 3MF format can preserve additional model and manufacturing information. Your file is processed directly in your browser and does not need to be uploaded.
Examples
- multi-object.3mf
Frequently Asked Questions
How is 3MF different from STL?
STL normally stores only triangular surface geometry and does not define units, colors, or materials. 3MF can preserve these details and can contain multiple objects in one file.
Can the viewer display multicolor 3MF models?
Yes, when supported color or material information is present in the file. The exact appearance depends on how the source application stored the model data.
Can a 3MF file contain multiple objects?
Yes. A 3MF package can contain multiple objects, reusable components, and object instances arranged within the same build.
Is my 3MF file uploaded?
No. The 3MF package is opened and processed locally in your browser.