Simon Willison’s Weblog

Prawn (via) Really nice PDF generation library for Ruby, used to generate Dopplr’s beautiful end of year reports.

Posted 16th January 2009 at 4:04 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

dopplr 12 pdf 39 prawn 1 ruby 72

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