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GLB file format (.glb)

GLB (binary glTF)

What is a GLB file?

GLB is the single-file binary packaging of glTF, the "JPEG of 3D". One file carries geometry, materials, textures and animations, optimized for fast GPU loading. It is the standard for web 3D, AR on Android, e-commerce product viewers and real-time applications.

  • Single self-contained file — easy to host and share
  • PBR materials, textures and animations included
  • Designed for fast loading on the web and mobile

Best for: Web viewers, AR and real-time 3D delivery.

View GLB files online

Open .glb files in the free online GLB viewer — assembly tree, section views and display modes, entirely in your browser.

How to open a GLB file

  1. Open the online GLB viewer. It runs in your browser, so there is no software to install and no account to create.
  2. Drop your .glb file in. The file is parsed locally and never uploaded. Inspect it with the assembly tree, section views and display modes.
  3. Convert it if you need another format. Press Convert to turn GLB into STL, then download the result straight from your browser.

Convert GLB to other formats

GLB to STLGLB to OBJGLB to PLYGLB to glTFGLB to 3MFGLB to OFFGLB to USDZ

Convert other formats to GLB

STEP to GLBIGES to GLBBREP to GLBSTL to GLBOBJ to GLBPLY to GLBglTF to GLB3MF to GLBCOLLADA to GLBAMF to GLBFBX to GLB3DS to GLBOFF to GLBLAS to GLBPCD to GLBXYZ to GLBPTS to GLB

Frequently asked questions

How do I open a .glb file?

Drop it into the free online GLB viewer on this site — it renders in your browser with an assembly tree and section views, and the file is never uploaded. No software install needed.

Does GLB store units and colors?

Units: meters by spec. Colors/materials: full pbr materials. Geometry is stored as gpu-ready triangle mesh.

How do I convert GLB to STL?

Use the free GLB to STL converter: drop the file, press Convert, download. Everything runs locally in your browser — no upload, no signup.

What is GLB best used for?

Web viewers, AR and real-time 3D delivery.

Is GLB an editable CAD format?

No. GLB packages tessellated, GPU-ready scene data for delivery and rendering, not exact surfaces, sketches or constraints. Converting CAD to GLB is therefore a one-way publishing step.

Can GLB store animation?

Yes. The conversion pipeline on this site handles static geometry, hierarchy and flat colors only, so it does not write or display animation tracks.