Show HN: Drag-and-drop playground to compare the true sizes of countries (github.com)

I built a drag-and-drop map playground to compare the true sizes of countries and visualize Mercator distortion, just for fun and sharing. Open source + easy to replace the GeoJSON with your own data.

Demo: https://www.runcell.dev/tool/true-size-map

Source: https://github.com/ObservedObserver/world-map-reality