Simon Willison’s Weblog

Rounded Corners with CSS and JavaScript. In which I attempt to show that you CAN have your cake and eat it too.

Posted 28th May 2004 at 5:11 pm

Recent articles

Phoenix.new is Fly's entry into the prompt-driven app development space - 23rd June 2025
Trying out the new Gemini 2.5 model family - 17th June 2025
The lethal trifecta for AI agents: private data, untrusted content, and external communication - 16th June 2025

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