Free online 3D file compressor
Shrink a GLB or glTF: weld duplicate vertices, optionally reduce polygons, and re-pack to a compact binary GLB — smaller downloads for web, AR and games. No sign-up, no watermark.
Everything runs in your browser — your file is never uploaded.
Drop a GLB / glTF file
or click to choose one from your device
Target compression rate 0%
Optionally reduce the polygon count from 0–90% — great for web, AR and mobile budgets.
Preparing a model for a website or AR experience? Read our guide to compressing GLB files for web and AR to understand mesh and texture tradeoffs, then check the optimized model before publishing.
Private by design
Optimization runs on-device with WebGL — nothing is uploaded, so confidential models stay yours.
Weld & re-pack
Duplicate vertices are merged and the model is re-packed as a compact single-file binary GLB.
Dial in the size
Optionally reduce the polygon count from 0–90% — great for web, AR and mobile budgets.
Check the result
See the before/after size and triangle count, then download only if you like the trade-off.
Build models worth optimizing
Grafy turns a photo, a few images, or a prompt into a textured 3D model you can rig, animate, remesh, print-prep and export — all on one visual canvas.