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About the 3MF format
3MF is STL's modern successor for 3D printing: meshes with units, colors and print metadata. It's mostly used for modern 3D printing (PrusaSlicer, Bambu Studio, Windows 3D), and it stores geometry with units, colors, materials and metadata.
Frequently asked questions
What advantage does 3MF have over STL?
3MF stores explicit units, colors, materials and even print settings in one compressed file — everything STL can't. It's the native format of modern slicers (PrusaSlicer, Bambu Studio, Cura).
Why convert 3MF to STL then?
Compatibility: print services, marketplaces and legacy software often require STL. The conversion extracts the geometry; 3MF's extra properties are dropped.
Will a 3MF from Bambu Studio or PrusaSlicer open here?
Yes — the geometry of the file's objects is read. The print settings those slicers store inside the 3MF (profiles, supports) are program-specific and aren't interpreted.
Other viewers
Online 3MF viewer
Drop your 3MF file and explore it instantly: real-mm measurements, wireframe and screenshots. The file never leaves your computer.