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[ARTICLE · art-119404] src=blog.adafruit.com ↗ pub= topic=developer-tools verified=true sentiment=· neutral

A GeoJSON map viewer

Simon Willison built a GeoJSON map viewer to display local political boundary maps for the Granada Community Services District and the Midcoast Community Council, with the ability to export maps as PNG. He used GPT-5.6-Sol to generate the tool.

read1 min views3 publishedSep 2, 2026

Simon Willison built a GeoJSON map viewer. He needed it while helping gather maps of local political boundaries for the Granada Community Services District and the Midcoast Community Council. The requirement was simple: display GeoJSON files on a map and export the result as a PNG. He asked GPT-5.6-Sol for tool suggestions and it built […]

source & further reading
blog.adafruit.com — original article A Deeper Dive into the Subscription Tier List A Coding Subscription Tier List Don't use musl if you care about performance
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