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GLB to 3MF converter

It runs in your browser. Nothing is uploaded.

GLB to 3MF

  • Kept. shape.
  • Dropped. colours, textures, bones and animation.
  • Size. Written in the unit you pick, millimetres for printing.
  • Up axis. 3MF stands on Z. The page turns the model for you.

The two types

  • GLB. GLB is glTF in one file: shape, materials, textures, bones and animation. Web viewers, AR, Unity, Godot and Blender all read it. Opened by Blender, Unity, Godot, Unreal, Windows 3D Viewer and any web browser with a viewer page.
  • 3MF. 3MF is a zip of XML made for 3D printing. It names its units and can hold several objects and colours, which STL can’t. Opened by Cura, PrusaSlicer, Bambu Studio, Orca Slicer, Fusion 360 and Windows 3D Builder.

Questions

How do I convert GLB to 3MF?

Drop the GLB file on this page, check the size under What’s inside, and press Download 3MF. It runs in your browser, so there is no upload and no wait.

What does GLB to 3MF keep?

3MF keeps the shape. It has no place for colours, textures, bones and animation, so those are dropped.

What size will the 3MF be?

3MF names its unit, and the page writes millimetres, which slicers expect. If the size looks off, change Write as under What’s inside.

Why does my 3MF lie on its side in the slicer?

GLB stands on its Y axis and slicers use Z. The Z up box, on by default, turns the model so it sits flat on the plate. Untick it for a program that expects Y up.

Will the 3MF print?

What’s inside says whether the surface is closed, which slicers need. If it is open, repair it in your slicer, Meshmixer or Blender first.

Is my file uploaded?

No. The file is opened and converted in your browser, and it stays on your device.

Is it free?

Yes. There is no account, no watermark and no limit on files.