Simon Willison’s Weblog

The versioning switch is not a browser detect. PPK: “In other words, the versioning switch does not have any of the negative effects of a browser detect.”

Posted 22nd January 2008 at 4:34 pm

Recent articles

The Summer of Johann: prompt injections as far as the eye can see - 15th August 2025
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LLM 0.27, the annotated release notes: GPT-5 and improved tool calling - 11th August 2025

browserdetect 1 browsers 88 doctypeswitching 2 ie8 25 internet-explorer 25 ppk 6 web-standards 46 xuacompatible 10

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