Convert GLTF to GLB Online Free

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Upload your GLTF file and get a clean GLB file back — free, instant, and no software to install.

Why Convert GLTF to GLB?

GLB packs your whole model — geometry, materials, and textures — into a single binary file, which is exactly what web AR tools like expect.

Whether you're preparing assets for compact web and mobile delivery or just need a format your current tool will accept, converting from GLTF to GLB takes the compatibility guesswork out of your workflow.

Source Format

.GLTF — GL Transmission Format

GL Transmission Format is a modern, JSON-based format built for fast loading and real-time rendering on the web.

Commonly used in: Three.js, Babylon.js, WebXR, AR/VR apps, and Sketchfab

Target Format

.GLB — Binary glTF

Binary glTF is the compact, single-file binary version of glTF, ideal for shipping models over the web.

Commonly used in: Web AR (model-viewer), mobile apps, and modern game engines

How to Convert GLTF to GLB

Upload Your GLTF File

Drag and drop or browse to select your GLTF file. Max file size is 200MB.

Select GLB as Output

GLB is pre-selected for you automatically on the converter page.

Download Your GLB File

Click convert and download your file in seconds. Files auto-delete after 1 hour.

Common Use Cases

Preparing GLTF assets for import into tools that only accept GLB
Cleaning up geometry and materials while switching to a more compatible format
Moving models between web, AR, and real-time delivery and compact web and mobile delivery workflows
Sharing a GLB file with a collaborator whose software doesn't support GLTF

Frequently Asked Questions

Upload your GLTF file to Convert3D, choose GLB as the output format, and click Convert. Your GLB file will be ready to download within seconds.

Yes. Convert3D converts GLTF to GLB for free with no signup, no watermark, and no conversion limits.

Convert3D preserves geometry, materials, and embedded textures wherever the GLB format supports them. Some attributes may not carry over if GLB does not support that data type.

The maximum file size for conversion is 200MB.

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