The mobile performance score for this website is 99, my desktop performance score is 100. Nearly perfect.
So how did this happen?
My website has always been quite smoothly running. A big part of that is the smoothness of the Twenty Twenty-Five theme and the block editor. There is not a single bit of custom code on my site, everything is built with full-site editing, and yet it doesn’t go at the expense of performance. My site is also hosted on WordPress.com, so much of the performance is just part of the business plan I use.
With just that, I already reached in the 90s for my performance score. Granted, my site is fairly simple. At the same time, I do use quite a bit of colour and style, and use my personal site to showcase my photography.
And this last bit is where Jetpack Boost fits in.
Disclaimer: I work for Automattic, the company that also owns Jetpack. This means that I have free access to all our paid plans. That said, no one asked me to write this post, and I wouldn’t have written it if I wasn’t genuinely impressed by the overnight performance change.
I had given myself a year’s access to Jetpack Boost and a few weeks ago, got an automated email that the premium plan had expired.
At the beginning of this month, I finally gave that some attention, but before doing so, ran a PageSpeed Insights review of my site. Its performance was pretty good with a 93 for mobile and a 97 for desktop. However, within an hour after upgrading Jetpack Boost and enabling the performance parts, most notably the optimised CSS loading and the advanced image CDN, the metrics reached their near-perfect score.