Simon Willison’s Weblog

YSlow: Bug (fix) in Firebug's Net Panel. The latest release of the YSlow page analysis plugin (announced at FOWA) also fixes a misleading bug in Firebug’s Net panel.

Posted 5th October 2007 at 10:26 pm

Recent articles

GPT-5: Key characteristics, pricing and model card - 7th August 2025
OpenAI's new open weight (Apache 2) models are really good - 5th August 2025
ChatGPT agent's user-agent - 4th August 2025

firebug 22 firefox 90 fowa 12 profiling 13 steve-souders 9 yahoo 107 yslow 2

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