OBJ to GLB Converter
Move a Blender, Maya, or ZBrush OBJ into the modern web stack. Single-file GLB output works in three.js, model-viewer, Babylon, A-Frame, and AR pipelines.
Drop your OBJ file here
Converts to .glb — stays on your device
Why convert OBJ to GLB?
- Loading a Blender OBJ export into a three.js scene — GLB is the loader's preferred format.
- Embedding a Wavefront OBJ asset in a product page via Google's <model-viewer>.
- Bringing a ZBrush sculpt into an AR product configurator on iOS or Android.
- Preparing a Maya or 3ds Max OBJ for a Babylon.js or A-Frame scene.
- Producing a single-file asset for a Sketchfab listing from a multi-file OBJ + .mtl source.
- Converting a CAD-tool OBJ export into GLB for an in-browser CAD viewer.
How our converter works
Your OBJ is parsed by three.js's OBJLoader into a Group of Meshes — vertices, normals, UVs, and face data are read into BufferGeometries. We pass the scene to three.js's GLTFExporter in binary mode, which packs everything into a single .glb file: geometry buffers, normals, UVs, and material descriptors all in one binary container. The output is standard glTF 2.0, which loads cleanly in three.js, model-viewer, Babylon, and A-Frame. Conversion runs entirely in your browser.
Frequently asked questions
Will materials carry over?
Partially. The OBJ format references materials via a separate .mtl file — since we only see the .obj, default materials are assigned to each mesh. For full material fidelity, do the OBJ→GLB convert in your DCC tool (Blender's File → Export → glTF), which can read the .mtl alongside.
What about textures?
Same caveat — texture image files referenced by the OBJ's .mtl aren't accessible through the file drop, so they aren't embedded. Use Blender's GLB exporter for full texture packing.
Will the GLB load in <model-viewer>?
Yes. The output is standard glTF 2.0 binary, which Google's <model-viewer> tag accepts as src directly. Three.js, Babylon, A-Frame, and Sketchfab all read it natively too.
How does GLB compare to OBJ in file size?
Usually smaller for binary geometry (no ASCII float overhead) but larger if the source had no textures and the GLB embeds default material descriptors. Typical OBJ → GLB shrinks to about 60-70% of the original size.
Are my files uploaded?
No. OBJLoader, GLTFExporter, and file I/O run as JavaScript on this page — your model stays on your device.
About the OBJ format
OBJ (Wavefront) is the text-based 3D interchange format that's been the lingua franca of DCC tools since the early 1990s — Blender, Maya, ZBrush, 3ds Max, and most CAD systems read and write it. Materials are referenced via a separate .mtl sidecar file. GLB (binary glTF 2.0) is the modern single-file alternative — geometry, PBR materials, textures, and animation all packed into one binary asset, optimized for the web and AR/VR. Converting OBJ→GLB is the standard step when a 3D asset graduates from a content tool into a web or AR pipeline. The conversion preserves geometry exactly; material data degrades to defaults unless you do the export from a DCC tool that can read the .mtl + texture sidecars.