Convert OBJ to GLB Online — Free
Upload a Wavefront OBJ file and download it as GL Binary. Runs entirely in your browser — no server uploads.
About These Formats
Wavefront OBJ
OBJ is a simple, human-readable text format that stores 3D geometry (vertices, faces, texture coordinates, and normals). It is one of the most universally supported formats.
Used with
Blender, Maya, Cinema 4D, 3ds Max, ZBrush, and virtually any 3D application.
GL Binary
GLB is the binary form of the GLTF format — a compact, web-optimized container that bundles geometry, textures, and animations into a single file.
Used with
Three.js, Babylon.js, React Three Fiber, Unity, Unreal Engine, Blender, AR/VR applications.
What Transfers from OBJ to GLB
A breakdown of which data survives the OBJ-to-GLB conversion.
3D Geometry
Vertices, faces, and normals always transfer
Textures & Materials
Diffuse map → albedo; roughness/metallic estimated from specular
Animations
OBJ does not store animations
Vertex Colors
OBJ does not support vertex colors
Multiple Objects
Scene hierarchy and multiple objects transfer
When to Convert OBJ to GLB
Convert OBJ to GLB when you need a web-ready, self-contained 3D asset. GLB is the preferred format for Three.js, React Three Fiber, Babylon.js, and Needle Engine. It bundles geometry, textures, and animations into a single binary file, making it ideal for fast web loading and AR/VR applications.
OBJ to GLB — What to Know Before Converting
OBJ uses Phong or Lambert shading rather than PBR. The converter maps diffuse colour to albedo and estimates roughness from specular intensity. The result is a working PBR mesh but may not match the original look exactly — open the converted file and adjust roughness and metallic values as needed.
OBJ references textures via a companion MTL file — the converter needs both to preserve materials. If only the OBJ is uploaded without its MTL and texture images, the output will be an untextured mesh.
The GLB output bundles all geometry, materials, and textures into a single self-contained binary — no companion files needed. Binary encoding typically reduces file size by 20–40% compared to text-based source formats. The file loads directly in Three.js, Babylon.js, React Three Fiber, Unity (GLTF importer), and Unreal Engine's built-in GLTF pipeline.
Other OBJ Conversions
Tips for the Best OBJ to GLB Result
Set the model origin to the centre of mass before exporting from your DCC tool. A misplaced pivot causes models to appear offset or rotate incorrectly in Three.js and AR viewers.
Apply all transforms (scale, rotation, location) before export — un-applied transforms produce unexpected scaling when the GLB is loaded in another application.
Keep combined texture size under 4 MB for smooth web delivery. Use the Texture Resizer tool to downscale large maps if needed.
In Unity, install the "GLTF Fast" or "UnityGLTF" package — Unity's default model importer does not support GLB natively.
Validate the GLB at gltf.report or the Khronos GLTF Viewer before deploying to catch material or mesh issues early.
Common Reasons to Convert OBJ to GLB
- →Web 3D: loading assets in Three.js, Babylon.js, React Three Fiber, or any WebGL / WebGPU renderer
- →E-commerce: embedding interactive 3D product viewers on Shopify, WooCommerce, or custom storefronts using <model-viewer>
- →Game engines: importing into Unity (GLTF importer package) or Unreal Engine's built-in GLTF pipeline with PBR materials intact
- →AR / VR: GLB is the standard asset format for WebXR experiences, iOS AR Quick Look, and Meta Quest browser apps
- →AI 3D generation: SphereLinks exports all AI-generated models as GLB with full PBR textures — ready to drop into your project immediately
Frequently Asked Questions
How do I convert OBJ to GLB?
Upload your .obj file using the tool above, confirm the source format is set to OBJ and the target is GLB, then click Convert. The file processes in your browser and you can download it immediately.
Does converting OBJ to GLB preserve textures?
Yes. Converting to GLB preserves PBR materials and embedded textures from the source file.
Is this converter free?
Yes, completely free. No account, no usage limits, no hidden fees.
Are my files uploaded to a server?
No. All processing happens locally in your browser using WebGL. Your files never leave your device.