You’re Surely Aware Of The Meaning Of The Term “Duplicate Content”, But How To Avoid It During Creating Content Or Recognize It When It Has Happened?

In this post, in advance:

1. Duplicate content: in the case when it is really a duplicate
2. About CopyScape, the Plagiarism Checker – Duplicate Content Detection Software
3. Relationship between Duplicate Content & IP Canonicalization
4. Checking Duplicate Posts on a WordPress site & IP Canonicalization

1. Duplicate content, when it is really a duplicate

What does “real duplicate” mean?

Try To Avoid Creating Duplicate Content!In the simplest case, duplicate content would be created if you copy a content has been published on the Internet and your post is the same as the original document (Title, Description, Content, Links. etc.). This is not the best way to obtain audience and additive traffic, additionally, this “event” may turn out very soon. Additionally, maybe it is not a legal way (depending on the content source).

Nonetheless, you can’t avoid it if you write e.g. a technical documentation or a product review that includes the product features with regard to the same product. Be careful what you write about, what you want to quote and how you write about your selected topic.

How to detect that your content is a duplicate?

It is enough to visit the Originality Checker Service of (read more about it below), type in even the full text to the appropriate text input box (learn more about this SEO Service below) and CopyScape will show you all the same contents on the web. It can be very awkward if somebody recognizes you are using the same articles as your competitors do…so try to avoid it for any costs. Try to be honest and thorough on the Internet, and write only your ideas down (if possible). You can use other contents as a supplementary to increase the value of your writing, of course, but always designate the original sources (and always use quotes).

2. About CopyScape Plagiarism Checker – Duplicate Content Detection Software

Before the beginning: “What is Plagiarism?”

“Many people think of plagiarism as copying another’s work or borrowing someone else’s original ideas. But terms like “copying” and “borrowing” can disguise the seriousness of the offense:

According to the Merriam-Webster Online Dictionary, to “plagiarize” means

  • to steal and pass off (the ideas or words of another) as one’s own
  • to use (another’s production) without crediting the source
  • to commit literary theft
  • to present as new and original an idea or product derived from an existing source

In other words, plagiarism is an act of fraud. It involves both stealing someone else’s work and lying about it afterward.” – taken from and read more about “What Is Plagiarism” on

Protected by Copyscape Plagiarism Checker - Duplicate Content Detection Software - Do not copy content from this page.CopyScape is really useful and necessary if you want to check and compare any contents on the Web whether they are same (duplicate content), or simply similar, containing the some of same words and expressions, links, Title and Description, images, etc. If CopyScape Plagiarism Checker – Duplicate Content Detection Software finds something matching, the search results will be displayed including all links containing the matching content, and the percentage of this matching content. Basically, if you quote e.g. a poem you’ll get exactly matching, duplicate content. It doesn’t matter anyway until you use quote “” marks of course, designating the source. On this way, you can avoid the possible penalties of Search Engines and accusation of plagiarism.
For this entire checking process to carry out, you need the Premium Search Service of CopyScape. Don’t be afraid, it is not so expensive, it costs only $0.05/search. However, you need to buy the smallest package at least to begin the work with (containing 200 searches, meaning $10.00). It is really worth if you are a blogger and quote other bloggers’ work frequently or write product descriptions, etc.

3. Duplicate content, when it is not really a duplicate, only it “seems so” as if it were

In this case, the duplicate content is in a close connection with incorrect IP & URL Canonicalization. It means, that you not necessarily have to have duplicate content, but it seems as if it were in the eyes of Search Engines, especially Google. I’ll explain it why:
Suppose you create a new site and you add and submit it on Google Webmasters e.g. without www (incl. sitemap.xml). However, you want to use it www, and your address shows this www. During the website creation and submission you will make a mistake not placing 301 redirection concerning www and non www site addresses (URLs). In this case, Google will see your site as an entirely duplicate content, however, “physically” you have created only ONE content! If you want to read more about this process how to check IP canonicalization, please refer to my previous articles in this topic.

4. Checking Duplicate Posts on a WordPress site & IP Canonicalization

What if you have a WordPress site?
WordPress is a precisely created and constantly maintained blogging software. This is the reason why you don’t have to worry about IP Canonicalization, 301 redirect, duplicate posts, link structure.

a. How to change www to non www within WordPress? – IP Canonicalization, 301 redirects

WordPress Dasboard - General Settings - Site Address URLsLet’s see this topic first, because it is the most important aspect. Login to your WordPress site, visit
Dashboard > Settings > General,
and you will see immediately how your site has been built, using www or non www. Now, you can change this settings as you wish, and your WordPress will change the content of your .htaccess file accordingly. You can change the site address even the installation files of the site take place in another location, too.
You must taking account of the settings on your Google Webmaster account of course, otherwise, if the settings did not match, this fact will cause duplicate content (because of the incorrect IP and URL Canonicalization). Always check your redirections (codes 200 and 301) and IP and URL Canonicalization.

Note: after changing www to non www (or vica versa), you’d need to login to your WordPress site again.  Be careful during this action, your site may hang up. If this happens, in most cases, you will be able to restore the status quo (previous state) of your site only from within your MySQL database. If you are unsure what you are doing, do not begin it but call your expert friend to help you.

b. How to find duplicate posts within your WordPress site (if any)?

Exactly matching, duplicate posts may start up on your site if you publish something e.g. twice as a result of a mistake (for instance, if you use some kind of posting software or your co-admin had posted that particular post before your action). How to detect this kind of duplicate content?
On WordPress sites it is easier than you’d think: find a kind of Duplicate Posts Checker plugin in the repository of WordPress. Simply search one on your WordPress Dashboard > Plugins > Add New, and you’ll be able to choose from the available ones.
I’ll use “Trash Duplicates & 301 Redirects” WP plugin (you can try others as well, I am not affiliated with them), so I’ll describe how simple it is to make a duplicate content search and remove the unwanted duplicate posts. On the other hand, this plugin is capable of redirecting one post (link) to another, if their content is duplicate (or you simply want to).

Let’s see how to remove duplicate posts on WordPress:

First of all, install the Plugin. Then, simply click on Trash Duplicates within you WP Dashboard Menu bar and all of duplicate posts will be listed. I placed some duplicates on my site (purposefully), in order to show you how it looks like:

WordPress Trash Duplicates And 301 Redirection Plugin - Duplicate Posts

As you can see, all duplicate posts will be displayed as their title and number of them, and you can decide which one to keep, the Oldest or the Newest one of them (concerning every single post). You can search duplicates as well, typing in their titles into the search box. It is possible to choose actions, such as Move To Trash/Delete Permanently, Post Types such as Post /Page/Attachment, whether to show Drafts or not.

How to use 301 redirects with this WP plugin:

WordPress Trash Duplicates And 301 Redirection Plugin - Redirection ListAs I’ve mentioned it above, this plugin can create 301 (permanent) redirection, so you will be able to easily redirect one post (or page) to another, if it is necessary because of their duplicate content, or you want to simply do it so. This can be an important part of the correct IP & URL canonicalization process  on your site.

How to use it? Just type in your link – Request Box -, then add the wished Destination, then click on Add and your redirection is ready.


As you could see, Duplicate Content may cause significant issues and has negative impact on your site, or – what is worse – personally on you. For instance, if you use other writer’s content, you can lose your authority, your site rank can be dropped as a penalty of the search engines. Not to mention, that plagiarism is not considered to a legal activity, and even the law may punish it as well. What considered to plagiarism?
Consequently, if you want to publish something, try to avoid it in any cases and any time.

Thank you for visiting and reading!

Gyula Olah electrical engineer, author, publisher, the owner of SEO Service Guide site.

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