claygroundglTF to STL converter
It runs in your browser. Nothing is uploaded.
glTF to STL
- Kept. shape.
- Dropped. colours, textures, bones and animation.
- Size. Written in the unit you pick, millimetres for printing.
- Up axis. STL stands on Z. The page turns the model for you.
The two types
- glTF. glTF is the open standard for 3D on the web. A .gltf file is JSON that points at a .bin and picture files; GLB packs all of it into one. Opened by Blender, Unity, Godot, Unreal and every web 3D library, including three.js and Babylon.js.
- STL. STL describes a surface as triangles and nothing else: no colour, no units. Slicers read its numbers as millimetres. Opened by Cura, PrusaSlicer, Bambu Studio, Blender, MeshLab and Fusion 360.
Questions
How do I convert glTF to STL?
Drop the glTF file and its picture files on this page, check the size under What’s inside, and press Download STL. It runs in your browser, so there is no upload and no wait.
What does glTF to STL keep?
STL keeps the shape. It has no place for colours, textures, bones and animation, so those are dropped.
What size will the STL be?
STL has no units, and slicers read its numbers as millimetres. The page writes millimetres, so a 40 mm part from glTF arrives 40 mm long. If the size looks off, change Write as under What’s inside.
Why does my STL lie on its side in the slicer?
glTF 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.
My glTF has textures. Do I drop them too?
Drop the .bin file and the picture files together with the .gltf. Names are matched whatever folder they came from.
Will the STL 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.