This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

No Duplicate Content


This is a plugin to resolve your duplicate content issue by adding a canonical link to your HTML head section. No Duplicate Content is brought to you by Chung Bey Luen.

Google, together with Yahoo and Microsoft have just announced a new tag, canonical link, which can be used to publicly tell search engines your preferred version of a URL. If your site has identical or vastly similar content that’s accessible through multiple URLs, canonical link provides you with more control over the URL returned in search results. It also helps to make sure that the properties of a web page such as link popularity are consolidated to your preferred URL.

Check out my blog post about the duplicate content issue.

Plugin Homepage: No Duplicate Content


  1. Unzip the zip file you have downloaded (
  2. Upload folder ‘no-duplicate-content’ to the ‘/wp-content/plugins/’ directory
  3. Activate the plugin through the ‘Plugins’ menu in WordPress
  4. Done



Contributors & Developers

“No Duplicate Content” is open source software. The following people have contributed to this plugin.

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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.