Free GLTF to GLB Converter

Lightning-fast GLTF to GLB conversion — 100% in your browser. Your files never leave your device. Free, no watermark, no sign-up.

Upload 3D Model

Drag and drop or click to upload. Files are processed locally in your browser.

Click or drag to upload

Supports GLB, GLTF, OBJ, STL, FBX, PLY

GLBGLTFOBJSTLFBXPLY

3D Preview

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Upload a 3D model to preview and convert it

Fast3D AI

No GLTF file? Generate one with AI.

Skip the search — generate a model from text or an image, then convert it to GLTF or any other format in one workflow.

Generate → convert — all on fast3d.org.

GLTF vs GLB

See what transfers when converting between these two formats.

FeatureGLTFGLB
Geometry
Textures
Materials
Animation
Rigging

All features supported by GLTF are preserved in GLB.

GLTFGLB

Frequently Asked Questions