Choose your STL file
Select STL from your device. The file is processed locally.
ON YOUR DEVICE
STL to glTF
Convert STL models to glTF on your device. Preview the mesh, then check the exported model.
Choose a 3D model
GLB, glTF, OBJ, STL or PLY · Device-dependent capacity
Three simple steps
Prepare glTF output
glTF uses JSON scene data. Include referenced BIN and texture files when opening a source glTF; remote assets are blocked.
Save and check your glTF file
Check scale and orientation in the destination application. STL and OBJ files do not reliably declare units.
Common questions
What changes when I convert STL to glTF?
STL contains triangle geometry only. Materials, textures, scene hierarchy and animation are not retained. glTF uses JSON scene data. Include referenced BIN and texture files when opening a source glTF; remote assets are blocked. Check scale and orientation in the destination application. STL and OBJ files do not reliably declare units.
Will the glTF file be smaller?
Not necessarily. glTF uses JSON scene data. Include referenced BIN and texture files when opening a source glTF; remote assets are blocked. Size depends on the source and settings. Compare the exported file and inspect its geometry.
Which STL files work here?
STL contains triangle geometry only. Materials, textures, scene hierarchy and animation are not retained. Only mesh models are supported, not CAD solids or every compressed glTF extension.
Is there a size cap for STL to glTF?
There is no fixed file-size quota. Process one main file at a time. Your device memory and browser determine practical capacity. Large selections show a warning that you can continue past.