Converters · glTF → 3MF
glTF to 3MF Converter
Free, private, in your browser. Convert glTF to 3MF — no signup, no upload.
Unlike online converters that upload to a server, your file never leaves your browser.
Drop your 3D file here
or click to browse — .gltf files up to 200 MB
When to convert glTF to 3MF
You have a textured glTF/GLB and want a full-color 3D print. STL and OBJ drop the color; 3MF carries it. This converter bakes the model’s texture into per-vertex color and packs a 3MF your slicer can print in color.
glTF vs 3MF: what’s the difference?
glTF is the open web and AI-pipeline standard for 3D, carrying geometry, UV coordinates, PBR materials, textures and animation — usually split across a .gltf file plus a .bin buffer and images. 3MF is the zip-based format Bambu Studio and PrusaSlicer save by default, storing geometry alongside color and print settings. Converting glTF to 3MF bakes the model’s texture into per-vertex color, producing a file ready for full-color printing on a Bambu AMS or Prusa MMU.
What glTF → 3MF keeps and drops
Preserved
- ✓Full mesh geometry
- ✓Surface color, baked from the texture into per-vertex color
- ✓Real-world scale and proportions
Dropped
- ✗Animation and rigging — 3MF is a static print format
- ✗PBR detail beyond base color — metalness, roughness and normal maps are not printable
- ✗Fine texture resolution, since color is sampled per vertex rather than per pixel
How to convert glTF to 3MF
- 1Drop your .gltf (or .glb) file onto the box above, or click to browse.
- 2The file is parsed and the texture baked to color in your browser — nothing is uploaded.
- 3Check the colored 3D preview, then click “Convert to 3MF”.
- 4A .3mf file downloads, ready to open in Bambu Studio or PrusaSlicer.
Color bakes per-vertex, so texture detail is limited by mesh density — low-poly models show coarser color. Metalness, roughness, normals and animation are dropped as unprintable. A .gltf that references external .bin or texture files may not resolve them in the browser, so a self-contained .glb bakes color most reliably.
glTF to 3MF — FAQ
How is the color preserved?
The base-color texture is sampled per vertex and stored as 3MF vertex color — what Bambu Studio, PrusaSlicer and Cura read for full-color printing.
My .gltf has separate .bin and texture files — will it work?
A self-contained .gltf or a .glb works directly. A .gltf that references external files may not resolve them in-browser — export it as GLB first, then convert.