FBX Compressor
Compress an FBX for real-time use: the model is converted to an optimized GLB — quantized geometry, deduplicated data, WebP textures — usually a fraction of the FBX's size.
Drag & drop your FBX file here
Compress FBX models for real-time use — output is an optimized GLB, the compressed runtime format engines and viewers load. Drop texture images alongside the FBX to include them.
Or click to browse
FBX (+ PNG, JPG, TGA textures)
How It Works
Upload an FBX
Drop in the model, with its texture images alongside if they aren't embedded.
Tune the compression
Choose texture quality and size limits, quantization, or meshopt for the smallest output.
Download optimized GLB
A verified, engine-ready file — typically a fraction of the FBX's size.
Frequently Asked Questions
There is no in-browser FBX writer, and more importantly, GLB is what you actually ship: engines, Three.js, Babylon, and viewers load it natively, and it supports real compression (quantization, meshopt, WebP textures) that FBX doesn't. Keep the FBX as your editing master; ship the GLB.
It depends on what dominates the file. Texture-heavy models often shrink 60–90% from WebP re-encoding and downscaling alone; geometry-heavy models benefit most from quantization and meshopt. The result panel shows the exact before and after.
Yes — skeletons and animation clips convert and compress along with the meshes, and the output is re-imported after compression to verify it still loads.
No. Conversion and compression run entirely in your browser via Three.js and glTF-Transform — nothing leaves your machine.
Cap textures at 1024–2048px with WebP around 80% quality, keep quantization on, and reach for meshopt only if you control the loader. A product viewer or game asset for the web is usually best in the 1–5 MB range — the result panel tells you when you're there.
Geometry quantization is visually lossless at defaults; texture quality is where you make the trade. Compare the before/after preview at the camera distance your users will actually see — texture artifacts that show at 4× zoom often don't matter at real viewing size.