Viewers
Free Online 3MF Viewer — No Upload
A free online 3MF viewer for .3mf models (3D Manufacturing Format). The model opens and renders in your browser via WebGL — no upload, no registration.
Drag files here, or click to browse
Supports STL, OBJ, PLY, 3MF, GLB, GLTF, XYZ, PCD, MTL, PNG, JPG, WEBP, BMP, GIF
Choose fileSupports STL / OBJ (+MTL + textures) / PLY / 3MF / GLB / GLTF · parsed locally in your browser; files are not uploaded
Works on mobile too — tap to pick a file, one-finger rotate, pinch to zoom
What is a 3MF file?
3MF is a modern 3D-printing interchange format (3MF Consortium) that stores meshes plus production metadata — units, materials and part names — in a ZIP-based container.
How to view a 3MF file online
Drag your .3mf file below. The mesh renders in your browser via WebGL so you can verify the model before slicing. Files stay on your device.
Convert 3MF files
FAQ
Is 3MF better than STL?
3MF carries units, materials and part metadata that STL lacks, which is why newer slicers prefer it.
Can I open 3MF files without an app?
Yes — this viewer renders 3MF files directly in the browser.
Are 3MF files uploaded?
No. All processing is local to your browser.