Simon Willison’s Weblog

Shadowmaker. Upload a PNG with a transparent background and get back a shadow image suitable for use with the Google Maps API.

Posted 10th December 2007 at 3:45 pm

Recent articles

Wilson Lin on FastRender: a browser built by thousands of parallel agents - 23rd January 2026
First impressions of Claude Cowork, Anthropic's general agent - 12th January 2026
My answers to the questions I posed about porting open source code with LLMs - 11th January 2026

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