OBJ to GLB converter
Convert OBJ to GLB free online for Three.js, Babylon.js, and web 3D viewers. Compact binary glTF with embedded materials, no signup, files deleted in 1 hour.
Drop a file to convert here
or click to browse
About GL Transmission Format Binary
Common Use Cases
- Publishing OBJ models on the web
- Loading 3D assets in Three.js and Babylon.js
- Converting models for AR viewers
OBJ is universally supported in desktop 3D tools, but web browsers need glTF. GLB is the binary glTF format that loads fast in Three.js, Babylon.js, and Google Model Viewer. Converting OBJ to GLB is the standard path for getting desktop 3D assets onto websites and into AR experiences.
OBJ is a text-based desktop format with separate .mtl files for materials. GLB is a self-contained binary optimized for fast web loading with PBR materials.
Why Convert OBJ to GLB?
Publish 3D on the web instantly
GLB is the native format for WebGL renderers. Three.js, Babylon.js, A-Frame, and Google Model Viewer all load GLB without additional plugins or loaders.
Single self-contained file
OBJ requires separate .mtl and texture files. GLB packs geometry, materials, and textures into one binary, eliminating missing file issues.
Faster loading than OBJ
Binary GLB parses faster than text OBJ, especially for large models. This means quicker page loads and smoother user experiences.
PBR materials for realistic rendering
GLB uses the glTF PBR metallic-roughness material model, producing better-looking results in web and AR renderers than OBJ Phong materials.
When to use each
Use OBJ when...
- Editing in desktop 3D applications
- You want a human-readable text format
- The pipeline is desktop-only
- Archiving meshes in an open text format
- Inspecting geometry in a text editor
Use GLB when...
- Displaying models in web browsers
- You need fast binary loading
- Building web 3D experiences
- Embedding 3D in AR on mobile devices
- Sharing compact self-contained 3D files
Common use cases
- Publishing OBJ models on the web
- Loading 3D assets in Three.js and Babylon.js
- Converting models for AR viewers
How to use
- Upload your OBJ file. Drag and drop a .obj file onto the upload area, or click to browse. Files up to 500 MB are supported.
- Run the conversion. Click Convert File. Geometry and materials from the OBJ and .mtl are converted to glTF PBR and packed into a single GLB binary.
- Download your GLB. Save the .glb file and load it in any web 3D framework. Files are deleted from our servers within 1 hour.
Frequently asked questions
- Are OBJ materials converted to PBR?
- Yes. Phong material properties from the .mtl file are mapped to glTF PBR metallic-roughness. Diffuse color becomes base color, and specular is approximated as metallic-roughness.
- Are textures embedded in the GLB?
- Yes, if the texture files are accessible in the same directory as the OBJ. They are embedded in the GLB binary for self-contained deployment.
- Can I view the GLB in my browser?
- Yes. Use Three.js, Babylon.js, Google Model Viewer, or any online glTF viewer.
- Is converting OBJ to GLB free?
- Yes. Free with no signup. Anonymous users get a daily allowance, registered accounts get higher limits, and Premium or Lifetime members get unlimited conversions.
- What is the file size limit?
- The maximum file size is 500 MB per conversion.