GLB Compressor — Shrink GLB Files Up to 90%
Compress GLB models directly in your browser with Draco and meshopt geometry encoding. No uploads, no signup, no quality surprises.
Upload Your Model
Drop a 3D file or browse your device. Your model never leaves this browser tab.
Click or drop your file here
Supported formats: GLB, GLTF, OBJ, FBX, STL, PLY
Preview
Upload a model to see it here
🔒 100% client-side processing. Your model is processed in this browser tab and is never uploaded to any server.
GLB is the standard delivery format for web 3D, AR quick look and most real-time viewers — which is exactly why GLB file size matters so much. A typical uncompressed GLB carries vertex-heavy meshes, full-resolution textures and animation curves that most viewers never need at full weight.
This GLB compressor rewrites the file with Draco or meshopt geometry compression, welds duplicate vertices and prunes unused data — typically cutting 70–90% of the size while textures and materials stay untouched. The result drops straight into three.js, <model-viewer>, Babylon.js or Unity's glTFast.
Compress GLB when you need to:
- Serve product 3D viewers that load in under two seconds
- Ship AR experiences that don't stall on mobile GPUs
- Meet marketplace and ad-platform GLB size limits
How to Compress a 3D Model Online
Upload your GLB file
Drag the file onto the drop zone or click to browse. It is processed entirely in your browser — nothing is uploaded to a server.
Choose a compression preset
Pick Light for gentle cleanup, Balanced for the best size-to-quality trade-off, or Max for the smallest possible file.
Download the optimized model
Preview the result, check the size savings and download. If the file cannot shrink further, you get the original back.
Other 3D Compressors
Every format gets its own optimization pipeline — pick yours.
3D Compression — Frequently Asked Questions
How do I compress a GLB file?+
Drop your GLB onto the tool above, choose a preset and press compress. The file is re-encoded with Draco or meshopt geometry compression in your browser — usually finishing in seconds — and the optimized GLB is ready to download. Nothing is uploaded to a server.
How much smaller can a GLB get?+
Most GLB files shrink 70–90%. Geometry-heavy models with dense meshes compress hardest; files that are mostly texture data see smaller gains, since textures are kept at full quality.
Does GLB compression keep textures and animations?+
Yes. Textures, PBR materials and animation clips are preserved as-is — compression targets the geometry payload. Your model looks the same; it just weighs far less.
GLB or GLTF — which should I compress?+
They carry identical data — GLB packs it into one binary file, GLTF spreads it across separate files. If you're shipping to the web or AR, compress the GLB: single-file delivery plus geometry compression is the standard pipeline.
Don't Have a GLB File Yet?
Generate one first — turn a text prompt or a photo into a 3D model, then shrink it here in seconds.
Create a 3D Model