Summary & Key Takeaways ​

• Iwo Kadziela created an ASCII world map using only 445 bytes of data.
• The technique relies on deflate compression for data efficiency.
• A concise JavaScript snippet decompresses and renders the map in the browser.
• It demonstrates using fetch() with data: URIs for loading compressed data.
• The DecompressionStream API is central to the decompression process.

Our Commentary ​

This is just pure web magic. I love seeing these kinds of highly optimized, almost "code golf" solutions that push the boundaries of what's possible with minimal resources. The fetch('data:;base64,...') trick combined with DecompressionStream is something I genuinely didn't know was possible. It's a fantastic reminder that there's always more to learn about browser capabilities.