Every time you upload an image, WordPress quietly creates a whole separate page for it — a near-empty page with just the image and its caption. Most site owners never notice, but search engines do, and they're rarely a good look. Here's what attachment pages are, why they usually hurt, and how to switch them off cleanly.
WordPress quietly loads an extra JavaScript file called jQuery Migrate on most sites. It's a compatibility crutch for old code — useful while you need it, dead weight once you don't. Here's how to tell which, and how to remove it safely.
WordPress has its own task scheduler, WP-Cron, and most people never think about it until scheduled posts publish late or a busy site's CPU spikes for no obvious reason. The root cause is the same in both cases: WP-Cron isn't a real cron job. It's faked with page loads — and that assumption breaks at both ends of the traffic scale.
Adding FAQ schema takes five minutes. Choosing how to add it, so it doesn't quietly depend on another plugin's internals, takes one decision. This covers both routes, what each one actually outputs, and how to check it.
Most "speed up WordPress" advice hands you a pile of plugins and wishes you luck. That is how sites end up slower, not faster. The reliable way is a loop: measure a baseline, fix the biggest bottleneck, re-measure — and stop when the numbers say you are done.