Convert glTF to GLB - Free Online Converter
Drop a .gltf file below and download it as .glb in seconds. The conversion runs entirely in your browser - no upload, no signup, no watermark. Same glTF scene, repacked as one self-contained binary file that cannot lose its parts.
Updated July 2026
Done in seconds
Your glTF converts to GLB locally in your browser - no upload queue, no waiting.
Private by design
Your file never leaves your device. Nothing is uploaded, nothing is stored.
Free, no strings
No signup, no watermark, no file limit - convert as many files as you need.
How to convert gltf to glb
Drop your GLTF file
Drag the .gltf file into the converter above or click to browse. No account and no upload - the file stays on your device.
Conversion runs in your browser
The model is parsed and rewritten locally, in seconds for typical files. Geometry is carried over 1:1 - no remeshing, no quality loss.
Download the GLB
The .glb download starts from the same spot. Convert as many files as you like - there is no limit or watermark.
glTF and GLB, explained
What is glTF?
glTF is the JSON flavor of the same Khronos standard behind GLB. The scene description is human-readable JSON, typically pointing at external binary buffers and texture images. Same capabilities as GLB - PBR materials, animations, real units - in a multi-file layout.
The multi-file layout makes .gltf convenient to inspect and edit but fragile to share: if the .bin or textures go missing, the file breaks. For distribution, most pipelines pack glTF into single-file GLB - the conversion this fleet does in one click.
- Developed by
- Khronos Group (2015)
- Structure
- JSON scene file, usually with external .bin and texture files
- Used by
- Web pipelines, game engines, 3D tooling
What is GLB?
GLB is the binary form of glTF, often called "the JPEG of 3D". One file packs the full scene: meshes, PBR materials, embedded textures, animations, and a real unit scale (meters). It is the standard for 3D on the web and the default output of most AI 3D generators.
Because everything is embedded in a single binary file, GLB transfers cleanly between tools with nothing lost in transit. glTF/GLB is an open Khronos standard, loads fast, and is supported by every modern engine, DCC tool, and web viewer.
- Developed by
- Khronos Group (2015)
- Structure
- Single binary file: JSON scene + buffers + textures
- Used by
- Web viewers, Three.js, Unity, Unreal, AR apps, e-commerce platforms
What survives the gltf to glb conversion
Format conversion is honest work: some data has nowhere to go in the target format. Here is exactly what carries over.
Scene & geometry
It is the same format in different packaging - nodes, meshes, and transforms carry over exactly.
Materials & embedded textures
Materials survive; textures survive when embedded in the .gltf (data URIs). External texture/buffer files are not part of the single dropped file.
UVs, normals, vertex colors
All vertex attributes carry over unchanged.
File layout
That's the point: the multi-file layout becomes one binary - nothing external left to break.
Animations
Animation clips are not carried in this conversion - repack animated scenes with gltf-pipeline or a DCC export instead.
When should you convert glTF to GLB?
Pack to GLB before sharing or deploying: a .gltf travels with loose .bin and texture files that go missing in transit; GLB is one file that always arrives whole. It is also marginally faster to load.
Stay with .gltf during development when you want to hand-inspect or diff the JSON scene, or post-process buffers with tooling - it is the readable working format, GLB the shipping format.
Still weighing the formats themselves? See the full GLB vs GLTF comparison - structure, materials, file size, and which wins for each use case.
And if what you actually need is a new model rather than a new file format: 3D AI Studio's main tool can generate 3D models from photos with AI - with exports to every format on this page.
GLTF to GLB - frequently asked questions
Made with 3D AI Studio
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