Getting started
Prepare two models for a private, local comparison.
Choose a baseline and candidate
The baseline is the model you trust. The candidate is the revision you want to inspect. Choose both from your device; normal comparison keeps their geometry in your browser.
The import starts with common millimetre and right-handed Z-up settings. If either source uses a different frame, change its Expert settings before comparison; the selected interpretation remains attached to the result.
Review the import
Review the interpreted units, coordinate transforms, unsupported content, and approximation warnings before relying on a difference. Corrections are deliberate inputs and remain visible in the result.
Inspect before sharing
Move from the overview to ranked regions and sections. Export is a separate action; selecting local files does not upload them.