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

Cooking with Claude - 23rd December 2025
Your job is to deliver code you have proven to work - 18th December 2025
Gemini 3 Flash - 17th December 2025

http 99 https 13 ned-batchelder 18 urls 79

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe