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Building a World Map with only 500 bytes

Iwo Kadziela demonstrated how to generate a recognizable ASCII world map using only 445 bytes of compressed data. The technique leverages JavaScript's DecompressionStream API to inflate deflate-compressed base64 data directly from a data URI without external network requests.

Background

This post highlights advanced usage of modern web APIs for efficient data handling and creative coding challenges within constrained environments.

Source
Simon Willison
Published
Jul 5, 2026 at 07:09 AM
Score
6.0 / 10