> In what case are images inlined to a page’s initial load? Low resolution thumbnails that are blurred via CSS filters over which the real images fade in once

> In what case are images inlined to a page’s initial load? Low resolution thumbnails that are blurred via CSS filters over which the real images fade in once downloaded. Done properly it usually only adds a few hundred bytes per image for above the fold images. I don’t know if many bloggers do that, though. I do on my blog and it’s probably a feature on most blogging platforms (like Wordpress or Medium) but it’s more of a commercial frontend hyperoptimization that nudges conversions half a percentage point or so.