Convert OBJ to GLB (glTF) in your browser
Drop an OBJ file below and get back a GLB — the compact, single-file format made for the web and AR. Geometry and basic materials carry straight across, and because OBJ has no animation or rigging, there's nothing of that kind to lose in the trade.
The conversion runs entirely in your browser. Your model never gets uploaded to a server — it's read, converted, and saved locally on your own device.
How it works
Good to know
FAQ
Do I need the .mtl and texture files, or just the .obj?
The .obj alone gives you correct geometry but no color or materials. To keep the look of your model, include the .mtl file and any image textures it references (the .jpg/.png maps). GLB then bundles everything into one self-contained file, which is one of its big advantages over OBJ's loose-file setup.
Will the scale and units be right after converting?
GLB doesn't store a unit label — its convention is that 1 unit = 1 meter. OBJ is unitless too, so whatever numbers were in your OBJ come across unchanged; we don't rescale them. If your model looks tiny or huge in a viewer, the source OBJ was authored in a different unit (often millimeters or inches), and you'll want to scale it in your 3D tool before or after converting.
Is GLB actually better than OBJ for the web and AR?
For those uses, yes — that's what GLB was designed for. It's a single binary file (no separate material or texture files to lose), it's compact, and it's the format that browsers, model viewers, and AR Quick Look / Scene Viewer expect. OBJ is great as an interchange format but awkward to ship on the web because it's split across multiple files.
Does converting change my geometry or lose detail?
No. The vertices, faces, normals, and UV coordinates are carried over as-is; we're repackaging the same mesh, not remeshing or simplifying it. The file size often drops because GLB stores mesh data as packed binary instead of OBJ's plain text, but that's compression of how it's written, not a loss of detail.
Can I use the GLB for 3D printing?
You can, but it's usually the wrong tool. GLB is built for display — colors, materials, web and AR. For printing you generally want STL or 3MF, and you care about watertight, solid geometry and real-world units, which GLB doesn't enforce. If printing is your goal, convert OBJ to STL instead and check the model is manifold in your slicer.
Is my model really not uploaded anywhere?
Correct. The conversion happens in your browser using your own device's processing. The file is never transmitted to us or any server, so there's nothing to delete afterward and nothing for us to see — which also means even very large models stay private and convert as fast as your machine allows.