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PhotoGenius

Free 3D converter

Convert glTF to GLB

Drop a glTF file and download it as GLB. The conversion runs in your browser, so the file never leaves your device. It keeps the exact shape, materials and textures and animation.

Free, no sign-up, and your file stays on your device.

Drop a glTF file here

Converted to GLB in your browser. Nothing is uploaded.

GLB, glTF, OBJ, STL, PLY, FBX or 3MF, up to 300 MB. Add .mtl, .bin and texture files alongside.

What carries over from glTF to GLB

Checked against what the converter writes, not just what the formats allow.
Shape (triangles)
Kept exactly
UV coordinates
Kept
Colour texture
Kept
PBR maps (roughness, metalness, normal)
Kept
Vertex colours
Kept
Animation
Kept
Separate parts
Kept
Size and units
Unchanged (metres).
Up direction
Unchanged.

How to convert glTF to GLB

  1. Add your glTF

    Drop the glTF file, with its textures and .bin if it has separate ones.

  2. Check the preview

    Turn the model and check what will be kept before converting.

  3. Download the GLB

    The .glb is written in a second or two for most models.

When to convert glTF to GLB

  • To put it on the web

    GLB is what three.js, Google's <model-viewer> and most web viewers load: one file, textures included.

  • For Blender and Godot

    Both import glTF natively, with materials, so there is no .mtl or texture folder to keep together.

The two formats

glTF

glTF 2.0 (JSON)

A .gltf file is the text form of glTF 2.0: a JSON scene description that points to a separate .bin buffer and image files, or embeds them as data.

Usually comes from
Blender's glTF exporter, web pipelines and tools that keep textures as separate files
Opens in
the same apps as GLB, and Roblox Studio's 3D Importer, which lists .gltf
Units
Metres
Up axis
Y up

GLB

Binary glTF 2.0

GLB is the single-file, binary form of glTF 2.0, the open format the Khronos Group published in 2017 for delivering 3D assets. Mesh, materials, textures and animation all travel in one file.

Usually comes from
AI 3D generators (including PhotoGenius), Sketchfab downloads, web 3D projects and game asset stores
Opens in
Blender, Godot, three.js and most web viewers, Android's Scene Viewer, Bambu Studio and UltiMaker Cura, Unreal's glTF importer, and Unity with the glTFast package
Units
Metres
Up axis
Y up

Need a model to convert?

Make one with AI from a photo or a sentence, then download it as GLB and convert it here.

Questions

Something else? Ask us and a person will answer.

Is this glTF to GLB converter free?

Yes. There is no account, watermark or limit on conversions. It accepts files up to 300 MB; how large a model your browser can handle depends on your device's memory.

Is my file uploaded?

No. The conversion runs in your browser with the open-source three.js loaders and exporters, so your glTF never leaves your device.

Does the GLB keep textures and animation?

Yes, everything the glTF has that glTF supports: geometry, UVs, materials and textures embedded in the file, plus skeletons and animation clips.

My .gltf comes with a .bin file and images.

Select the .gltf, .bin and images together and they are resolved by name. A .gltf with everything embedded works on its own.

Can I make a 3D model from a photo instead?

Yes. PhotoGenius turns a photo or a text prompt into a textured GLB with Rodin Gen-2.5, Rodin Gen-2.5 Fast, Tripo H3.1, TRELLIS.2, Rodin Gen-2 or Hunyuan3D 3.1, which you can then convert here. See Image to 3D model.

Turn a photo into a 3D model

Rodin Gen-2.5, Rodin Gen-2.5 Fast, Tripo H3.1, TRELLIS.2, Rodin Gen-2 or Hunyuan3D 3.1 builds a textured GLB from one image. The price shows before you run it.

Make a 3D modelAbout the 3D generator