Before you click on a link, you hover over that link. When you have hovered for 65 ms there is one chance out of two that you will click. FasterChrome preloads the HTML of that link at that time, leaving on average over 300 ms for the page to preload.

This noticeably improve page load times. For simple sites it even makes them instant.

To prevent preloading links that trigger an action (such as logging out or deleting something) it doesn’t preload links with a query string. (Except links to HN comments!)

It’s based on https://instant.page/, a library to make your website faster with the same technique.