PureConverter

Convert GLTF to GLB

Convert GLTF files to GLB locally, completely free and with maximum privacy.

Drag and drop your files here

or click to browse local files (large files supported, limited only by browser RAM)

Upload Files

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How to convert GLTF to GLB

  1. Drop your .gltf files above, or click Upload Files. You can add many files at once.
  2. GLB is already selected as the output. Open the settings (gear icon) to fine-tune the result.
  3. Click Convert All. Assimp and three.js runs inside your browser through WebAssembly; nothing is uploaded.
  4. Download your .glb files as soon as each one finishes.

What to know about GLTF to GLB conversion

  • Geometry, materials and embedded textures are preserved in the GLB output when the source contains them.
  • Use glTF files with embedded buffers, or convert the GLB version: external .bin and texture files are not read.

GLTF vs GLB

FeatureGLTF (glTF 2.0 (JSON))GLB (glTF Binary)
Materials and texturesYesYes
Animation and riggingYesYes
Best forweb 3D in a human-readable JSON formatweb, AR and game engines in a single compact file
Opens inBlender, three.js, Unity, Unreal and online viewersBlender, three.js, Unity, Unreal and online viewers

GLTF (glTF 2.0 (JSON)): The JSON form of the Khronos glTF 2.0 3D transmission format, here with embedded buffers.

GLB (glTF Binary): The binary form of glTF 2.0, the standard 3D asset format for the web, AR, and game engines.

Conversion options

  • Custom output file name

Frequently asked questions

Is it safe to convert GLTF to GLB here?

Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.

Is there a file size limit?

There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.

Can I convert several GLTF files at once?

Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.

Related conversions

Need the opposite? Convert GLB to GLTF.

Convert GLTF to other formats

Convert other formats to GLB

See every GLTF converter and GLB converter, or browse the full converter directory.