PageRank is an algorithm used by Google to measure the importance and quality of a page to help rank it within search results. As a key element to Google’s algorithm, it is important to understand how PageRank is determined and how it is used. We cover this within our Hangout Notes along with further insights from Google.

Every Step in a Redirect Loses Some PageRank

September 12, 2014 Source

With redirect chains, some additional authority is lost for each redirect in the chains, so you should minimise them, but the amount is small. Google recommends getting links updated to point directly to the new URL.

PageRank Won’t Ever Be Shown Again

September 12, 2014 Source

Visible PageRank values probably won’t ever be updated again, but they are still calculating behind the scenes.

Disallowed URLs Don’t Pass PageRank

September 12, 2014 Source

If a URL is disallowed in robots.txt, it won’t be crawled, and therefore can’t pass any pagerank.

Redirecting URLs Do Lose Some PageRank

August 25, 2014 Source

Changing URLs and using redirects does result in a small loss of PageRank. Keeping original URLs is still better if possible. This is also why Google recommend updating backlinks.

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