Comparison
Priority hintvsResource hint
Priority hint
you marked the hero image as high priority so it stopped queueing behind three carousel images.
The `fetchpriority` attribute, which raises or lowers a resource's priority within the browser's own scheduling. It is the cheapest fix for the common case where the largest contentful element is an image the browser considered ordinary. Lowering the priority of below-the-fold images is the other half, and the two together are often worth more than any amount of compression.
Full entry →Resource hint
you added a link tag to tell the browser about a file before anything on the page asked for it.
A `link` declaration that tells the browser to do some network work early — resolve a hostname, open a connection, fetch a file, fetch a whole page. Hints are advisory: browsers apply their own heuristics and may ignore them under memory or network pressure. Used carelessly they compete with the resources that are actually critical, which makes a page slower by doing more work sooner.
Full entry →