Mesh simplifier

Reduce triangle count with meshoptimizer — lighter STL / GLB.

Runs entirely in your browser. Files never leave your device.

Choose a 3D file

STL, OBJ, PLY, GLB, STEP, IGES, FBX, 3MF, DAE

How it works

1
Drop a 3D file
Load STL, OBJ, PLY, GLB, STEP or any other supported format.
2
Choose a target ratio
Slide the target-triangles control to preview the reduction size.
3
Simplify and export
Run the WASM simplifier, then download the lighter mesh as STL or GLB.

Which algorithm does it use?

meshoptimizer's edge-collapse simplifier, compiled to WebAssembly — the same library used in Godot, Sketchfab and many glTF pipelines.

How aggressive can I go?

Choose any target between 2% and 95% of the original triangle count. Lower values preserve silhouette using an error threshold.

Can I simplify STEP or STL for 3D printing?

Yes. STEP is tessellated on load, then simplified. The result can be exported as STL or GLB.

Open .stl models — orbit, wireframe, snapshot, convert.

Parse STEP, IGES, BREP via OpenCascade WASM.

Open Wavefront .obj meshes with orbit and wireframe.

Preview .glb and .gltf 3D assets in your browser.

Convert between STL, STEP, IGES, OBJ, PLY, GLB, FBX, 3MF, DAE.

Snapshot a PNG preview from any 3D model file.