Duplicate content can be a huge SEO nightmare.
If you are not careful, it can tank your website’s search engine rankings and cause you to lose traffic.
In this post, we will explain what duplicate content is, how it hurts your SEO and how to avoid it.
- What Is Duplicate Content?
- How Does Duplicate Content Hurt SEO?
- When Does Duplicate Content Happen?
- How to Avoid Duplicate Content?
What Is Duplicate Content?
Duplicate content is when you have the same or very similar content on more than one page on your website or you have copies of other’s website content on your site.
It’s defined by Google as:
substantive blocks of content within or across domains that either completely match other content in the same language or are appreciably similar.
How Does Duplicate Content Hurt SEO?
There are a few ways that duplicate content can hurt your SEO:
- It confuses search engines
- It splits link equity
- It can get you penalized
- It can waste your crawl budget
It Confuses Search Engines
When search engines crawl your website, they want to be able to easily understand what each page is about.
If they see the same or very similar content on multiple pages, it will be difficult for them to determine which page is most relevant for a given query.
This can lead to lower search engine rankings for those pages.
In fact, Google says that:
It Splits Link Equity
Link equity is the power that a backlink passes from one webpage to another.
When you have duplicate content, other sites that want to link to you have to choose between these duplicates.
This way, the link equity gets split between the pages, rather than being concentrated on one page.
In a few words? You won’t reach the search engine ranking you would:
It Can Get You Penalized
If Google detects that you are deliberately trying to game the system by creating duplicate content, they may penalize your website with a lower search engine ranking:
However, this is extremely rare and it only happens if your site is acting to being deceptive and manipulating search engine results:
It Can Waste Your Crawl Budget
Crawl budget is the number of pages that a search engine will crawl on your website during a given time period.
If you have duplicate pages, it’s likely that the search engine will crawl the same content multiple times, which is a waste of your crawl budget.
When Does Duplicate Content Happen?
There are a few scenarios where duplicate content can happen.
For example, when you have:
- Multiple pages on your website with the same or similar content
- Content copied without permission
- WWW and Non-WWW-pages (Including HTTP and HTTPS)
Multiple Pages With Similar Content
Pay attention to your website architecture. If you have multiple pages with the same or similar content, you may have a keyword cannibalization issue. Therefore, it’s important to tell Google which page you want them to index. You can do this by using a rel=canonical tag.
For example, let’s say you have two pages on your website:
- Page A: example.com/page-a
- Page B: example.com/page-b
Both pages have the same or similar content. In order to avoid duplicate content issues, you would add a rel=canonical tag to Page B that points to Page A. This tells Google that Page A is the canonical or master version of the page, and they should index that one instead.
Content Copied Without Permission
If you find that someone has copied your content without permission, there are a few things you can do:
- Reach out to the site owner and ask them to remove the duplicate content. This is usually the quickest and easiest way to get rid of duplicate content. Simply reach out to the website owner and politely ask them to remove the duplicated content.
- File a DMCA complaint. If the website owner does not respond or remove the duplicated content, you can file a Digital Millennium Copyright Act (DMCA) complaint. This is a formal notice that asks the hosting company to remove the infringing content.
- Add a rel=canonical tag to your original content. This tells Google that your original content is the canonical or master version, and they should index that one instead.
WWW and Non-WWW-pages (Including HTTP and HTTPS)
One common cause of duplicate content is having both a WWW and non-WWW version of your website. For example:
- WWW: https://www.example.com
- Non-WWW: https://example.com
If you don’t redirect one to the other, Google will see these as two separate websites with the same or similar content. This can cause duplicate content issues.
To avoid this, you should set up a 301 redirect from the non-WWW to the WWW version or vice versa.
Another common cause of duplicate content is having both a secured version of HTTPS and a non-secured HTTPS version of your website. For example:
- Secured: https://example.com
- Non-secured: http://example.com
If both versions are live and visible to search engines and you don’t redirect one to the other, Google will see these as two separate websites with the same or similar content.
How to Avoid Duplicate Content
The best way to avoid duplicate content is to make sure that each page on your website has unique and original content.
That said, there are a few other things you can do:
- Use canonical tags
- Syndicate Carefully
- Use 301 redirects
Use Canonical Tags
A canonical tag tells search engines which version of a piece of content is the original and should be indexed.
This is helpful if you have very similar pieces of content or if you need to republish content from another source.
Here’s how to specify a canonical page, according to the documentation found at Developers.Google:
If you syndicate your content (meaning you publish it on other websites), be careful to add a rel=”canonical” tag to the syndicated version.
This will tell search engines that the original version of the content is on your website.
Google says that will always show the version they think is more appropriate (which may or may not be the version you would like):
Use 301 Redirects
A 301 redirect is a way of permanently forwarding one URL to another. This is helpful if you need to redirect traffic from an old page to a new page.
Duplicate content can be an SEO nightmare if you’re not careful.
By understanding what it is and how it hurts your website, you can take steps to avoid it.
This will help improve your search engine rankings and increase traffic to your website.
Thanks for reading!
I hope this post was helpful.
If you have any questions, feel free to drop them in the comments below!