Topology Tools

Browser-only geospatial topology utilities. All processing runs client-side via WebAssembly — your files never leave your device.

Tools

Topology Cleaner

Detect overlaps and gaps in a polygon coverage and clean them automatically, with an adjustable gap-width threshold.

Edge Extender

Fill gaps between adjacent polygons by extending boundaries outward with Voronoi diagrams.

Changelog

Compare two versions of a polygon layer and classify each unit as unchanged, modified, merged, split, created, or removed.

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