Simon Willison’s Weblog

Tutorials on Microformats. Roger Costello’s 11 tutorials on microformats, covering hCard, hCalendar, hReview and more.

Posted 14th February 2007 at 4:45 pm

Recent articles

My review of Claude's new Code Interpreter, released under a very confusing name - 9th September 2025
Recreating the Apollo AI adoption rate chart with GPT-5, Python and Pyodide - 9th September 2025
GPT-5 Thinking in ChatGPT (aka Research Goblin) is shockingly good at search - 6th September 2025

microformats 32 tutorial 18

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