A no-nonsense checklist of good performance advice from Karolina.
Did you know there’s an
imagesrcset attribute you can put on
link rel="preload" as="image" (along with an
I didn’t. (Until Amber pointed this out.)
AMP pages aren’t fast because of the AMP format. AMP pages are fast when you visit one via Google search …because of Google’s monopoly on preloading:
Technically, a clever trick. It’s hard to argue with that. Yet I consider it cheating and anti competitive behavior.
Preloading is exclusive to AMP. Google does not preload non-AMP pages. If Google would have a genuine interest in speeding up the whole web on mobile, it could simply preload resources of non-AMP pages as well. Not doing this is a strong hint that another agenda is at work, to say the least.
A collection of Flash preloaders. Out of context, they make for surprisingly compelling viewing all together.