Paul Irish

@paul.irish

5775 Followers 1454 Following

web performance and DevTools, mostly. In '97 I wrote a paper for English class on HTML Image Maps. I haven't changed much since.

A flame chart of loading NVIDIA's flagship ASR model, Canary. Captured with viztracer and shown in trace.cafe. It shows the load takes 52 seconds only for 3s of inference! Several annotations point out some opportunities for optimization (redundant tar extract, config read/write thrashing etc)
The decision to pursue the indictment against Abrego Garcia led to the abrupt departure of Ben Schrader, a high-ranking federal prosecutor in Tennessee, sources briefed on Schrader's decision told ABC News. Schrader's resignation was prompted by concerns that the case was being pursued for political reasons, the sources said. Schrader, who spent 15 years in the U.S. Attorney's Office in Nashville and was most recently the chief of the criminal division, declined to comment when contacted by ABC News.
DevTools Perf panel open against paulirish.com. A bitmap representation of the poop emoji is displayed in the profiler. (It was done with a lot of performance.measure() calls)
Video highlighting several features of Chrome DevTools Performance panel: bidirectional hover highlighting (between flamechart and topdown/bottomup), tracking line showing overview & flamechart position, ignore list flamechart collapsing, auto-annotations (AI-generated summaries of flamechart activity), layout shift visualizer, legacy JS insight showing relevant source locations, insight overlays, duplicated JS insight w/ treemap, annotations. Full video from I/O 2025: https://youtu.be/BHqxD9qr6Gw
DevTools showing a trace of the load. Render blocking requests annotated with their optimizations.
Screenshot of https://blog.lmarena.ai/blog/2025/webdev-arena/ showing the system prompt, which includes: > You are an expert frontend React engineer > - Create a React component for whatever the user asked you to create > - Use Tailwind classes for styling.
The context menu in Google Docs, showing 'Copy as Markdown' and 'Paste from Markdown'. Yes, copying a table works nicely!
Chrome on Android settings menu. Arrow pointing at Google Password Manager item.
Screenshot of Chrome on Android. "Inactive tabs (1950)"