Challenge
Show how much the Mercator projection distorts country sizes, in a way people get straight away.
Approach
A static app with geodesic drag maths, several projections, a globe view and shareable URLs. No backend.
Stack
- Vanilla JS
- D3.js
- TopoJSON
- Cloudflare Pages
Highlights
- Drag-and-drop country comparison on Mercator and equal-area projections
- Globe view, stack mode, and PNG/SVG export
- Privacy-friendly analytics and zero server-side storage