Avoid Duplicate Content – Use Canonical URL in WordPress

Go to the theme folder in wordpress(wp-content/themes/) and open the file header.php in your favorite editor. Now find the line…

and add the following code before that line…

That’s it – you are done! Save the file and upload it to your server.
This fix will add the canonical URL tag to all the posts and pages of your blog. If you want to see a blog that have implemented this fix, take a look at the source of this page.

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