PageSpeed Insights bookmarklet

I’m a little obsessed with web performance. I like being able to check a page’s core web vitals quickly and easily.

Four years ago, I made a Lighthouse bookmarklet. Whatever web page you were on, when you clicked on the bookmarklet you’d get the Lighthouse results for that page. Handy!

It doesn’t work anymore. This is probably because Google are in the loop. Four years is pretty good innings for anything involving that company.

I kid (mostly). Lighthouse itself is still going strong, despite being a Google product. But the bookmarklet needs updating.

Rather than just get Lighthouse results, I figured that the full PageSpeed Insights results would be even better. If your website is in the Chrome UX report, you get to see those CrUX details too.

So here’s the updated bookmarklet:

PageSpeed Insights

Drag that up to your desktop browser’s bookmarks toolbar. Press it whenever you want to test the page you’re on.