How this works
- Loads Natural Earth Admin‑0 (countries) GeoJSON via CDN (Public Domain).
- Converts it client‑side into an inline
world.svg (equirectangular viewBox).
- Renders the SVG via Leaflet’s
L.svgOverlay for interactivity.
- Click Export to download a fully offline, single‑file HTML with the SVG embedded.
Tip: 10m is most detailed (big), 110m is lightest.