In August, I celebrated my blog - with its homepage weighing-in at a total of just 481kb - being admitted to Kev Quirk‘s 512kb club. 512kb club celebrates websites (often personal sites) whose homepage are neither "ultra minimal" or "link pages" but have a total size, including all assets, of u automattic, web development, web, work, performance, blogging, smolweb

This isn't the guide for you
The Internet is full of guides on easily making your WordPress installation run fast. If you're looking to speed up your WordPress site, you should go read those, not this.

Those guides often boil down to the same old tips:

uninstall unnecessary plugins, nginx, web development, published on gemini, web, performance, wordpress

tl;dr? skip to the proof-of-concept/demo of lazy-loading CSS where possible while still loading it "conventionally" to users without Javascript

In a "daily tip" a couple of days ago, the excellent Chris Ferdinandi recommended an approach to loading CSS asynchronously based on a refined web development, web, javascript, progressive enhancement, performance, web design, css