A very informative and interesting presentation about browsing performance, looking at efforts Google Chrome takes to increase it.

From those slides

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There is a bunch of interesting pages in Chrome:

• chrome://dns - List of prefetched DNS
• chrome://predictors/ - Chrome knows where you'll go

Preconnect

With <link rel="preconnect" href="https://the-domain.com"> in an HTML head, you give the browser an early hint that it will need to access the mentioned domain. By setting up the connection in advance, page load performance gets improved.