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Iwo Kadziela, assisted by Codex, generated a credible ASCII world map using just 445 bytes of data by relying on deflate compression.
Iwo Kadziela, with help from Codex, built a recognizable ASCII-art world map compressed down to just 445 bytes by leaning on deflate compression instead of storing raw map data. ✦ AI generated
Simon Willison · Simon Willison's Weblog · 2026-07-04 · original ↗
Iwo Kadziela (assisted by Codex) figured out a way to generate a credible ASCII world map using 445 bytes of data: The key trick is to use deflate compression, which is then wired together using this neat snippet of JavaScript.
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- ·Iwo Kadziela built a credible ASCII world map
- ·Assisted by Codex during development
- ·Compressed to just 445 bytes of data
- ·Uses deflate compression instead of raw map data
- ·Wired together via a neat JavaScript snippet
- ·Enables small size while staying recognizable
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