Simon Willison’s Weblog

Http-https transitions and relative URLs. Finally, a reason to use those weird protocol-relative URLs (//example.com/path and the like).

Posted 18th October 2007 at 11:57 am

Recent articles

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
Fly's new Sprites.dev addresses both developer sandboxes and API sandboxes at the same time - 9th January 2026

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