Simon Willison’s Weblog

26th July 2022 - Link Blog

viewport-preview (via) I built a tiny tool which lets you preview a URL in a bunch of different common browser viewport widths, using iframes.

Posted 26th July 2022 at 12 am

Recent articles

GPT-5.4 mini and GPT-5.4 nano, which can describe 76,000 photos for $52 - 17th March 2026
My fireside chat about agentic engineering at the Pragmatic Summit - 14th March 2026
Perhaps not Boring Technology after all - 9th March 2026

This is a link post by Simon Willison, posted on 26th July 2022.

css 233 iframes 21 mobile 40 projects 522 testing 92

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