Sharovatov’s Weblog

rel=”canonical”

Posted in no category by sharovatov on 22 April 2009

Recently found out a very useful SEO stuff supported by Google (here), Microsoft Live Search (here), Yahoo (here) and Ask.com (here) – canonical links. Basically, if you have a page accessible by multiple URLs, from search engine’s prospective you’re bloating its database by serving duplicate content. So to avoid this, you have to set <link rel="canonical" href="..."> with href pointing to the original URL of this page. Search engines will check the url in href attr and won’t put a duplicate content penalty on your pages.

Useful thing to remember and use!

WordPress (here) and RoR (here) have already got plugins for canonical URL support. Hope to see support for this useful rel in other frameworks, forum and blog engines.

And I just found an interesting post on this topic by Anne van Kesteren with interesting discussion going in comments.


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