The WordPress permalink system is really nice as it even detects minor problems with URLs and is loading the correct page. For example we have a page with an URL like this:


If we type




into the Browser console we are also redirected to the correct page. Nice!

However if we type


With a random number at the end we are not redirected (though the correct page or post is displayed). The marketing guys of our company told me that this might be bad for SEO duplicate content issues? Why are those links not redirected and can/should I prevent this?

  • 1
    As long as you provide a canonical url, you should be fine as SE won't see this as duplicate content. Sep 11, 2018 at 11:39
  • @mistertaylor: .... would already make quite a good answer, though it does not yet explain this behaviour of WordPress.
    – Blackbam
    Sep 11, 2018 at 11:50
  • 2
    it's pagination - you're trying to access page 1212 of the post. The Debug Bar plugin is quite useful for diagnosing this type of behaviour. Sep 11, 2018 at 11:56
  • @mistertaylor: Thanks a lot how couldn't I think of that. Make an answer from that if you want 👍
    – Blackbam
    Sep 11, 2018 at 12:12

1 Answer 1


Ensure that you provide a canonical url - this should ensure that search engines don't see the url variants as duplicate content.

Additionally, appending a number on the url, will make Wordpress try to access that page.

Using a debug plugin, such as Debug Bar, is quite useful for diagnosing this kind of behaviour as it will show the query performed on each page.

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