Google announced that beginning in November 2020 it could start to crawl some websites over HTTP/2. Google wrote “today we’re announcing that starting mid November 2020, Googlebot will support crawling over HTTP/2 for select sites.”

Google stated websites that assist HTTP/2 ought to see effectivity enhancements with this modification. Google stated it “expects this change to make crawling more efficient in terms of server resource usage.” Why? In brief, it requires opening much less TCP connections; Google stated “Googlebot is able to open a single TCP connection to the server and efficiently transfer multiple files over it in parallel, instead of requiring multiple connections. The fewer connections open, the fewer resources the server and Googlebot have to spend on crawling.”

This will begin with a small variety of websites in November and Google will then ramp it up because it sees the way it goes. Googlebot decides which web site to crawl over h2 primarily based on whether or not the positioning helps HTTP/2, and whether or not the positioning and GoogleBot would profit from crawling over HTTP/2, Google stated. If your server helps HTTP/2 and Googlebot already crawls rather a lot out of your web site, you could be already eligible for the connection improve, and you do not have to do something.

Google has a bigger article with FAQs on this over here.

Just an FYI – Google stated in 2015 this assist was coming soon. But I feel that was extra on if GoogleBot can deal with HTTP/2 websites normally, not that GoogleBot itself will crawl utilizing HTTP/2.

And no, “is there any ranking benefit for a site in being crawled over h2? No.” Google really additionally stated that in 2016.

Here is a little more from Gary:

Forum dialogue at Twitter.

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