/ 3mf / viewer
3MF viewer
Open a .3mf file and see it, with its real dimensions and units. It renders in this tab.
Your file never leaves your browser. STEP, IGES and BREP fetch the OpenCASCADE kernel (2.3 MB over the wire); 3DM fetches rhino3dm (2.5 MB before compression); every mesh and scene format fetches neither. Nothing downloads until you pick a file.what we bundle ↗
estimate · above the measured floor
This will take about
Your file is . STEP parsing measured at across real CAD files, and this machine benchmarked . Nothing has been downloaded yet.
- Kernel to download — OpenCASCADE
- —
- Parse and tessellate
nobody should wait that long without having been told
above 25 MB · may not fit in a browser
This file may be too big for a browser
At this needs roughly here. Whether it fits depends on the geometry, not the size: a large CAD assembly can open, while a much smaller STEP exported from a mesh can run out of memory. If it does, this page says so, and the file never leaves your computer either way.
If it does not open here
- Bambu Studiofree · windows · macos · linux
- Blenderfree · windows · macos · linux
- FreeCADfree · windows · macos · linux
the same sourced table as the format page — dated, not invented
we never block the attempt, we only tell you the cost first
rendered locally · — fps
drag to orbit · scroll to zoom · shift-drag to pan
Why 3MF objects can stack at the origin
A 3MF package separates the objects it defines from the build that places them. When a file has no build items, there is nothing saying where anything goes, so every object is shown at its own origin and they can sit on top of each other. The warning names that case.
The reverse also happens. Objects defined in the package but left out of the build are not shown here, because they are not part of what the file says to print. If a part you expect is missing, check that the export included it in the build.
3MF is the format to prefer over STL when the print setup matters: it declares its unit, keeps colours and keeps component structure. Read the 3MF guide for what survives a conversion out of it.