Convert GLB to 3MF Online
Convert GL Transmission Format Binary (GLB) files to 3D Manufacturing Format (3MF), entirely in your browser. No upload, no sign-up. Your files never leave your device.
Drop your GLB file here
or click to browse from your computer (up to 100 MB)
Detailed car model with PBR materials and textures.
3MF was designed by the 3MF Consortium specifically for additive manufacturing. Converting your GLB model produces a file that Cura, PrusaSlicer, BambuStudio, and Simplify3D all open natively without plugins or extra preparation.
GLB stores PBR materials defined by the Khronos Group's glTF 2.0 specification, including metallic-roughness workflows and per-vertex colors. The conversion maps these properties to 3MF's per-triangle color and material definitions for multi-color printers.
GLB can contain animations, skeletal rigs, cameras, and lights that are meaningless for 3D printing. The conversion strips all rendering-specific data and retains only the geometry and color information your printer needs.
Also convert from GLB
Other ways to get 3MF
How to Convert GLB to 3MF
Drop your GLB file and get a print-ready 3MF in seconds. No software to install.
Upload GLB
Drag and drop or select your .glb file. GLB is a self-contained binary format so a single file is all you need.
Processing
Conversion runs entirely in your browser. Mesh geometry is extracted and repackaged into the 3MF XML structure with materials and color data. Your data never leaves your device.
Download 3MF
Get your .3mf file ready for any slicer. Open it directly in Cura, PrusaSlicer, or BambuStudio and start preparing your print.
Why convert GLB to 3MF?
GLB is the binary container for glTF 2.0, an open standard maintained by the Khronos Group for efficient real-time 3D delivery. It packages geometry, PBR materials, textures, animations, and a full scene graph into a single binary file optimized for web browsers, AR viewers, and game engines. While GLB is excellent for on-screen rendering, it was not designed for manufacturing and lacks the metadata that 3D printers require.
3MF (3D Manufacturing Format) was created by the 3MF Consortium, whose members include Microsoft, HP, Autodesk, and Stratasys. Built on the Open Packaging Conventions (OPC) used by formats like .docx, 3MF stores mesh geometry, per-triangle colors, named components, build plate layout, and print tickets in a compact ZIP archive. Converting GLB to 3MF bridges the gap between real-time rendering and physical manufacturing, producing a file that every major slicer opens natively.
Key advantages of 3MF over GLB for 3D printing
3MF is recognized out of the box by Cura, PrusaSlicer, BambuStudio, and Simplify3D without import plugins.
3MF can store build plate orientation, scale, and print tickets with slicing parameters that GLB has no mechanism to express.
Multi-part models are organized as individually named build items with their own transforms, making assembly management simple in any slicer.
Color data is assigned directly to mesh faces, enabling full-color printing on compatible hardware without UV maps or texture images.
3MF is fully documented and freely available from the 3MF Consortium, while GLB targets rendering rather than manufacturing workflows.