Open, inspect and convert CAD files without uploading them.

16 formats, 120 conversions, and a viewer that runs in this tab. Every conversion tells you what it kept and what it threw away.

Drop a .3dm or .brep file

.3dm .brep .brp .iges .igs .step .stp .3ds .3mf .amf .obj .ply .stl .dae .fbx .glb .gltf .usdz .wrl .vrml

Free, and it opens in this tab. Nothing is uploaded, and there's no account to make.

Runs locally · nothing uploaded · the CAD kernel loads once you choose a file

The format is read from the file's contents, not its extension. The file stays on your computer.

How this differs

01  Nothing is uploaded
The converter is WebAssembly running in this tab. There's one exception, and its page says so before you choose a file.
02  Every conversion reports what it lost
Units, colour, assembly structure, parametric history: each one listed by name, before you download.
03  Every claim shows its source and date
When a source couldn't confirm something, the page says "unconfirmed" instead of guessing.