Reduce polygon count while exporting FBX.
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Simplify FBX meshes to reduce polygon count and compress geometry data. Meshopt/Draco are glTF container encodings and do not apply to FBX. The output remains in FBX format, processed entirely locally in the browser.
Default50%
Range0% – 100% · step 5%
Reduces the number of faces and vertices using mesh simplification. Default medium strength; increasing strength shrinks file size further but may lose surface detail. Only affects geometric density, not the container format.
Drop an FBX file
Adjust simplification strength
Download optimized FBX
No. The output remains FBX (packaged as ZIP when external textures are present), so rigs, blendshapes, and the original pipeline are preserved. For a GLB with Draco or Meshopt, use the GLB/GLTF vertex compression tools instead.
Draco and Meshopt are container extensions defined for glTF, so they cannot be applied to FBX. FBX compression works through mesh simplification followed by FBX export. This still cuts file size considerably, especially on dense meshes.
Higher intensity removes more faces and produces a smaller file, but surface detail and skinned deformation degrade. Start with a low ratio (0.2-0.4), raise it gradually, and watch the real-time preview. For characters and animated parts, stay conservative so blendshapes and rigs keep their shape.
It fits any scenario that must keep the FBX workflow (animation, rigging, materials), such as game characters, product configurators, and in-engine cutscenes. For pure web delivery, GLB/GLTF with Meshopt or Draco usually compresses harder.
No. Decimation permanently removes faces, so the original vertex data cannot be recovered from the output. Always keep a backup of the source FBX and confirm the result in the preview before you download.
Yes. Unity and Unreal import FBX directly, so the simplified mesh drops in without conversion. Keep the intensity moderate for LODs (0.5-0.7 is common for distant levels) and check the preview to protect silhouette quality.
Yes, compression accepts FBX 6.1 (FileVersion 6100) and newer in ASCII or binary form. Older files use an incompatible structure and are rejected before processing. Re-export such models with current 3D software so they can be simplified here.
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