Simon Willison’s Weblog

Legacy. James Bennett has what I think is the most interesting analysis of the X-UA-Compatible header to date.

Posted 23rd January 2008 at 2:14 pm

Recent articles

Video: Building a tool to copy-paste share terminal sessions using Claude Code for web - 23rd October 2025
Dane Stuckey (OpenAI CISO) on prompt injection risks for ChatGPT Atlas - 22nd October 2025
Living dangerously with Claude - 22nd October 2025

browsers 91 ie8 25 internet-explorer 25 james-bennett 19 web-standards 46 xuacompatible 10

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