How it works

1. Choose two STEP files: version A and version B of a part or an assembly (.step / .stp, from any CAD system).
2. The comparison runs in your browser. The geometry engine (OpenCascade) is loaded into the page; your files are not uploaded anywhere.
3. Read the verdict: identical, the same part in another position, or different. The differing faces are coloured in the 3D view.

What it finds, in detail Use it from your AI assistant