Geodata Formatter

Convert CSV / tabular geodata to GeoJSON.

When to invoke

• User has a flat file with location columns and needs GeoJSON for Leaflet / Mapbox / QGIS / ArcGIS / Kepler.gl / geopandas / PostGIS.
• User asks "convert to GeoJSON", "make this mappable", "export as geojson".

Supported inputs

1. Lat/lon columns — pair of numeric columns (lat/lng, latitude/longitude, y/x). Most common.
2. WKT / WKB geometry column — a string column containing POINT(...), LINESTRING(...), POLYGON(...) etc. (or hex-encoded WKB).
3. H3 / S2 / geohash — spatial index strings that decode to polygons/cells.
4. Address / place name columns — requires geocoding; ask user explicitly before using a third-party service and respect rate limits.

Output formats