January 2026

Why Greenland Looks Huge on Web Maps: The Web Mercator Projection Explained

Leave a Comment / GIS /

Have you ever looked at Google Maps and noticed that Greenland appears absolutely enormous—almost as large as the entire continent of Africa? Yet if you check the actual numbers, something doesn’t add up. Greenland covers approximately 2.17 million km², while Africa spans a staggering 30.37 million km². That means Africa is roughly 14 times larger […]

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Building an OpenStreetMap Renderer from Scratch

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Understanding Web Mercator, tiles, pixels, and map math by implementing your own OSM renderer in pure JavaScript. Introduction Most developers use libraries like Leaflet, OpenLayers, or Mapbox GL to render maps. These libraries hide a huge amount of mathematics and geodesy behind a simple API. But what actually happens when you: In this article, we

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