Updated June 2026 · runs 100% in your browser
glTF to GLB
Convert glTF to GLB (single binary file) on your device. No upload, no sign-up, no limits.
Drop glTF files here
or click to choose
🔒 Processed on your device · 0 bytes uploaded
Loads the 3D engine (~1 MB) on first use — cached after that.
How it works
Drop glTF files and download GLB models.
It all runs in your browser with a local copy of three.js — your model never leaves your device, and it stays free, unlimited and private.
About glTF to GLB
GLB packs a glTF and its data into one compact file that is easier to share and loads fast in viewers and AR.
Frequently asked questions
How do I use glTF to GLB?
Drop glTF files and download GLB models.
Why pack to GLB?
One self-contained binary is simpler to host and faster to load than glTF with separate files.
Is my file uploaded?
No. It is converted on your device with a local copy of three.js; nothing is uploaded.
What is a glTF file?
glTF (GL Transmission Format) is an efficient modern 3D format often called 'the JPEG of 3D.' It bundles geometry, materials, and animation for fast loading in browsers and engines.
What is a GLB file?
GLB is the binary form of glTF — a single self-contained file holding 3D geometry, materials, and textures. It's the modern standard for sharing 3D models on the web and in AR.