Recently we had a client who wanted to change their Permalink structure from

Old Permalink structure: /%author%/%category%/%postname%/

to:

New Permalink structure: /%author%/%category%/%postname%/%post_id%/

so that they would qualify for Google News. Apparently you need at least 3 digits in your URL in order to qualify for Google News.

I wanted to simply change the Permalink structure by going to Settings>Permalinks in WordPress. However, the problem is that Google sees 2 URLs for the same post which could cause Google to penalize you for duplicate content:

Google would see both the old and new Permalink structure for the same content:

For example, Google would see:

(old) http://example.com/Rebecca/News/MyPost/

and

(new) http://example.com/Rebecca/News/MyPost/222

So we need to make sure the old Permalink structure has a 301 redirect to the new Permalink structure.

Thankfully, after trying many plugins, we finally found and successfully implemented this plugin: Permalink Redirect WordPress Plugin

The directions on the site are very old and quite confusing.

Here’s how to use Permalink Redirect WordPress Plugin

1. Download, Install and activate the plugin
2. Go to Settings>Permalinks and copy down your old permalink structure
3. While you’re in Settings>Permalinks, change the Permalink structure to your new permalink structure
4. Go to Settings>Permalink Redirect and where it says “Old Permalink Structures”, paste in your old permalink structure

That’s it.

This post was originally published at How to Change Permalink Structure in WordPress without Duplicate Content on WP Garage - WP Garage - wordpress tricks, hacks, and tips.