Google Says Self-Referential Canonicals Help Clean Up Small Mistakes

Google’s John Mueller said that using self-referential canonicals is a good way to clean up small SEO mistakes. He was asked about it on Reddit, about the difference between self-referential canonicals and normal canonicals.

When it comes to self-referential canonicals, John said “since you don’t know how people link to your pages, a self-referential one helps to clean up small mistakes.”

A normal canonical is in the format of link rel=”canonical” href=”http://feeds.seroundtable.com/~r/SearchEngineRoundtable1/~3/XYOOr8B5yrs/b.html” and John said “if this is on a.html, then it’s just a normal canonical (technically canonical link element), if it’s on b.html, then it’s a self-referential one.”

John added “Since you don’t know how people link to your pages, a self-referential one helps to clean up small mistakes. For example, if a link goes to b.html?utm=cheese , then usually the server just shows b.html, and a self-referential canonical link element there would then encourage search engines to just use “http://feeds.seroundtable.com/~r/SearchEngineRoundtable1/~3/XYOOr8B5yrs/b.html” instead of “b.html?utm=cheese”.”

You have to go with the cheese example here.

Also, a while back, John said self referential hreflang is optional but good practice.

Forum discussion at Reddit.

Note: This was pre-written and scheduled to be posted today, I am currently offline for Succos.

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