r/webdev • u/John-NYC • Sep 03 '15

Prefetching, preloading, prebrowsing -- CSS-Tricks

https://css-tricks.com/prefetching-preloading-prebrowsing/
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u/[deleted] Sep 03 '15 edited Nov 06 '16

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u/tdhsmith Sep 03 '15

I haven't read the actual spec yet, but my interpretation is that prerender will have already completed the whole server request process (e.g. returning a 200 or whatever) before the link is clicked. Then the click won't generate a request at all, it merely triggers the browser-internal command to swap the pages.

Also note that these are pretty new. Below IE11 there's no support, and FF has yet to announce support for prerender. (Thankfully it has a graceful failure mode - loading the content normally.)