Simon Willison’s Weblog

25th July 2007 - Link Blog

YSlow. New extension for Firebug (yes, an extension on top of another extension) from the Yahoo! performance team which provides improved performance measurement tools and optimisation advice.

Posted 25th July 2007 at 4:48 am

Recent articles

The new GPT-5.6 family: Luna, Terra, Sol - 9th July 2026
sqlite-utils 4.0, now with database schema migrations - 7th July 2026
sqlite-utils 4.0rc2, mostly written by Claude Fable (for about $149.25) - 5th July 2026

This is a link post by Simon Willison, posted on 25th July 2007.

extension 2 firebug 22 firefox 101 http 124 optimisation 6 performance 95 yahoo 107 yslow 2

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