Polygon to Line
Convert GeoJSON Polygon and MultiPolygon boundaries into LineString features while preserving properties.
Input
Exterior and interior rings become linework; polygon area semantics are not retained.
Review these warnings
GeoJSON
Map preview
Understanding Polygon to Line
Spatial relationships and derived geometry
Convert GeoJSON Polygon and MultiPolygon boundaries into LineString features while preserving properties.
Polygon to Line evaluates where features lie relative to one another or creates geometry from that relationship. Geometry validity, boundary rules and compatible coordinate assumptions control the result.
How to verify the operation
Exterior and interior rings become linework; polygon area semantics are not retained.
Review Polygon to Line with feature counts, empty outputs, boundary cases and a few known examples. Confirm units and CRS assumptions before treating the result as authoritative.