How AI helped me get my website to a perfect Lighthouse score

I've been into web performance for as long as I can remember. Back in the day, I cared about it enough to write a book, Fast ASP.NET Websites. My career has since moved into gaming, and while I've kept an eye on web performance, I haven't stayed as up to date as I'd like. A few of the worst-performing pages on this blog were sitting at a Lighthouse score of 73. I'd been putting off tackling them, but after making some changes to the blog recently, I tried something different: I handed the performance problem to GitHub Copilot, using a mix of Opus and GPT Astra. I gave AI the Lighthouse output, pointed it at my theme, and asked it to work through the biggest problems first. I now have a Lighthouse score of 100 on almost all pages including mobile. It still needs testing on real-world devices, but I've never quite been able to achieve that in the past without a lot of pain. Where it got it wrong It didn't get it perfect the first time round, but it did a pretty amazing job. The AI…