Yet another trick to make your Internet feel faster :-)

Speculation Rules API (SRA) is a recently updated browser API which allows for a JSON definition to dictate what page A wants to do with page B. The "do"-ing can be either prefetching (just download the HTML) or prerendering (load the page, including its static assets, and render it completely). The prerendering happens in a new browser process and page B is ready to be swapped with the current page A instantaneously when the user navigates to B.

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