Over on Twitter, one SEO professional asked John Mueller about PageRank. For those who don’t know, in SEO, PageRank is Google’s algorithm for measuring website “value,” developed by and thus named after Google’s co-founder Larry Page.
Their question was: they had a debate last week that they could not settle. Is Page Rank (link juice) divided among all dofollow links on page or only among unique dofollow links?
They noted that Google provided no specific answers, either.
John suggested looking at the documentation that talks about PageRank, more specifically, the documentation that exists over at Wikipedia.
I'd check out the docs about PageRank, https://t.co/yv12xrlkWE has a nice overview. It's a pretty well-documented algorithm.
— 🐝 johnmu.csv (personal) 🐝 (@JohnMu) June 23, 2022
What Does the Documentation About PageRank Say?
If you haven’t done so before, there is a lot to digest in the Wikipedia article. But, the equation-less portions of the article say the following:
This is all older information, and may not reflect exactly 100 percent what Google does today, but is still useful to read up on if you have no clue about PageRank and how it is calculated.
It’s also worth noting that PageRank has not gone away. It has simply been moved to more of an internal mention so that Google doesn’t have to be public about it.
Googler Gary Illyes said as much in 2017 about this:
DYK that after 18 years we're still using PageRank (and 100s of other signals) in ranking?
— Gary 鯨理／경리 Illyes (@methode) February 9, 2017