Convert GLB / glTF to STL online — free, no signup, no upload
glTF / GLB is the web & real-time 3D format; STL is what 3D printers use. This converter extracts the mesh geometry from a .glb/.gltf and writes an .stl, so you can print a web 3D model. This converter runs entirely in your browser: your file is read on your device, converted, and downloaded — it is never uploaded to a server.
How to convert GLB / glTF to STL
1. Drag your file onto the box above, or click Open GLB / glTF file. 2. Preview the model in 3D to confirm it's the right one. 3. Click Convert to STL & download — the new file saves straight to your device.
Frequently asked questions
How do I convert GLB to STL?
Drop your .glb or .gltf above or click Open, preview it, then click Convert to STL & download — all in your browser.
What happens to textures and materials?
STL stores geometry only, so textures, colours and animation are dropped — you get the printable mesh.
Is my model uploaded?
No — the conversion is 100% client-side; nothing leaves your device.