Compare Two GIS Layers
Compare two GeoJSON dataset versions and report added, removed, and unchanged records using a stable ID field or complete feature content.
Input
Use a unique and stable property when geometry or attributes can change. Without one, any feature change is reported as a removal and addition.
Review these warnings
Validation report
Map preview
Understanding Compare Two GIS Layers
Spatial relationships and derived geometry
Compare two GeoJSON dataset versions and report added, removed, and unchanged records using a stable ID field or complete feature content.
Compare Two GIS Layers 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
Use a unique and stable property when geometry or attributes can change. Without one, any feature change is reported as a removal and addition.
Review Compare Two GIS Layers with feature counts, empty outputs, boundary cases and a few known examples. Confirm units and CRS assumptions before treating the result as authoritative.