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3MF (3D Manufacturing Format) is a modern 3D printing file format developed by the 3MF Consortium, which includes Microsoft, Autodesk, HP, Stratasys, and other industry leaders. Designed specifically to address the limitations of STL, 3MF packages geometry, color, texture, material, and metadata into a single compressed ZIP-based archive.
Unlike STL, which stores only bare triangulated geometry, 3MF supports per-vertex and per-triangle colors, texture mapping, multiple materials, and print-specific metadata such as build orientation and support structures. This makes it ideal for modern multi-color and multi-material 3D printers.
The 3MF format uses an XML-based internal structure wrapped in a standard ZIP container, making files compact and efficient. Leading slicers including PrusaSlicer, Cura, and Bambu Studio natively support 3MF, and the format is increasingly becoming the recommended alternative to STL for all 3D printing workflows.
Drag and drop your .3mf file onto the viewer above, or click the upload area to browse your device. The file loads instantly in your browser.
Rotate, pan, and zoom to inspect every detail of your 3D model. Toggle wireframe view and use measurement tools to check geometry.
Take screenshots, toggle view modes, or share your model. All processing happens locally in your browser for complete privacy.
View 3MF models with per-vertex and per-triangle color data rendered accurately in the browser.
See material assignments on different parts of your 3MF model, useful for multi-extruder print preparation.
3MF uses ZIP compression, keeping files small while storing rich geometry, color, and metadata information.
3MF files can include build orientation, support data, and slicer settings that streamline the printing workflow.
Stereolithography format, the industry standard for 3D printing and rapid prototyping
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