3D model converter

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

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

Choose a 3D file

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

How it works

1
Drop a 3D file
Add any supported model — CAD B-Rep or polygonal mesh.
2
Confirm the preview
The viewer renders the parsed geometry so you can verify orientation and scale.
3
Download the new format
Pick STL, OBJ, PLY or GLB and save the converted file.

Which formats can I convert between?

Read STL, STEP, IGES, BREP, OBJ, PLY, GLB, glTF, FBX, 3MF and DAE — write STL, OBJ, PLY or GLB.

Is conversion lossless?

Meshes are preserved vertex-for-vertex. STEP / IGES are tessellated to triangles because the target formats are mesh-based.

Does anything upload to a server?

No. Every read, tessellation and write happens in your browser via WebAssembly.

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.

Reduce triangle count with meshoptimizer — lighter STL / GLB.

Snapshot a PNG preview from any 3D model file.