Are my GLTF files uploaded anywhere?

No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.

Is converting GLTF to GLB free?

Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.

Does converting GLTF to GLB lose quality?

GLTF and GLB describe content in fundamentally different ways, so the conversion is a reconstruction rather than a copy. The result is faithful, but not byte-for-byte equivalent. Geometry only. Materials, colours, textures and animation are not carried across, and a model placed several times comes back with each copy baked into its own position.

Do I need to install anything to open GLB files?

No installation is needed for the conversion itself — it runs in the browser you already have. Opening the GLB afterwards needs whatever software normally handles Binary glTF on your device.

GLTFtoGLB

Convert GLTF to GLB

Up to 3 files at once, 100 with Pro. Mixed formats are fine.

You can convert GLTF to GLB free and without an account: drop the file above and the GLB is ready to download in a second or two. The conversion happens inside your own browser, so the file is never uploaded — it works on Windows, Mac, Linux, iPhone and Android, and keeps working with the network switched off.

What GLTF and GLB are for

The 3D format for the web. Geometry, materials and animation in one JSON file.

glTF with its textures packed in. One file instead of a folder full of dependencies.

How to convert GLTF to GLB

Drop your GLTF file onto this page, or click to pick one.
Choose GLB as the target. The conversion runs inside your browser — the file is never uploaded.
Download the finished GLB file.

GLTF vs GLB: what changes

GLTF compared with GLB
	GLTF	GLB
Full name	GL Transmission Format	Binary glTF
File extension	.gltf	.glb
Media type	model/gltf+json	model/gltf-binary

Quality: The result is a close reconstruction rather than an exact copy. Check it before relying on it.
Where it runs: This conversion runs inside your browser. Your file is never uploaded, and it works with the network disconnected.
What can be lost: Geometry only. Materials, colours, textures and animation are not carried across, and a model placed several times comes back with each copy baked into its own position.

GLTF to GLB: common questions

Are my GLTF files uploaded anywhere?: No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.
Is converting GLTF to GLB free?: Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.
Does converting GLTF to GLB lose quality?: GLTF and GLB describe content in fundamentally different ways, so the conversion is a reconstruction rather than a copy. The result is faithful, but not byte-for-byte equivalent. Geometry only. Materials, colours, textures and animation are not carried across, and a model placed several times comes back with each copy baked into its own position.
Do I need to install anything to open GLB files?: No installation is needed for the conversion itself — it runs in the browser you already have. Opening the GLB afterwards needs whatever software normally handles Binary glTF on your device.