How to preload?

Question

JavaScript

Gentlemen, how to implement site preloading. those. first, a one-pager opens, all the specified icons are loaded there, loading passes, you press the button and go to the site itself? I know it's not difficult, but I'm a teapot

Answer 1

I know that Toaster is quite popular in the ru-segment, but for it to become a search plugin for browsers, mmm something new.
Keep
A little more popular than the Toaster and, as unexpectedly (!!!) , it also helps.