• Draw points, lines, polygons, and measurements
• Import GeoJSON, KML, KMZ, and zipped Shapefiles
• Export GeoJSON, CSV, KML, KMZ, and Shapefiles
• Switch between 2D map, satellite imagery, and 3D globe
• Search places, edit attributes, style features, and filter layers
• Save locally in the browser and optionally share online via Firebase

Vanilla JavaScript, HTML, and CSS. Uses Leaflet for 2D mapping, MapLibre GL JS for 3D globe, JSZip and shp.js for file handling, and Firebase for auth and sharing.