STL to GLB Converter

Show your printable models on the web: convert STL to compact GLB for Three.js, model-viewer and AR quick look.

Web & AR readyCompact binaryFree ≤25 MBNo sign-up

Why GLB for the web

GLB is the JPEG of 3D — a single compact binary that every browser viewer understands. Your STL geometry converts as-is; add materials later in Blender or your viewer if needed.

Frequently asked questions

Is this converter free?
Yes — up to 10 conversions a day and files up to 25 MB, no account needed. Larger files (up to 60 MB) and high-detail STEP output use credits ($9 for 20). Everything runs server-side on real geometry kernels, and failed jobs auto-refund.
What happens to my files?
Files are uploaded only to run your conversion and stored briefly so you can download the result. We don't share them, mine them or train on them. See our privacy policy.