You open a cosy bookstore with shelves lined with thousands of books. People find out about your place and arrive with a mission: to find something rare—maybe an autographed copy or a first edition of a book that went out of print decades ago.

But they notice something strange. Row after row of books has identical covers, stories, characters, lessons. They are met with the same thing over and over. There’s little variety or originality to explore.

Visitors leave, word gets around and soon fewer people come to browse. 

This is the impact of duplicate content on a website. Just as a bookstore filled with identical books would disappoint visitors, a website with duplicate content can drive away users and suffer traffic losses. 

In this post, we’ll explore why duplicate content matters, how it can affect SEO and what you can do to keep your site’s ‘shelves’ filled with engaging, original content.

What Is Duplicate Content?

Duplicate content refers to identical or nearly identical content that exists in multiple places online. This can occur when the same content appears on different web pages, websites or even within the same website.

It can appear in various forms, from entire pages to segments like paragraphs or product descriptions.

While it may be unintentional and does not directly lead to a penalty, it affects search engine rankings. When multiple instances of similar content exist across various locations online, search engines may struggle to determine which version is most relevant to show for a specific search query.

Say you run an e-commerce website that sells a particular brand of smartphone. The product descriptions for these smartphones appear exactly the same on multiple pages:

• Page 1: ‘Brand Y Smartphone – Featuring a high-resolution display, advanced camera system and long-lasting battery for the ultimate smartphone experience.’
• Page 2: (A different URL but the same product description) ‘Brand Y Smartphone – Featuring a high-resolution display, advanced camera system and long-lasting battery for the ultimate smartphone experience.’

Keep in mind that duplicate content can also refer to content that is very similar to other content, even if it has been slightly rephrased. This is especially true if they convey almost identical information.

Why Duplicate Content Is Bad For SEO

Did you know that 29 per cent of pages contain duplicated content?

While it may seem harmless, Google faces challenges with duplicate content. It’s difficult for its algorithms to determine which version of the content is the original and most authoritative. Also, showing multiple identical pages for the same query dilutes the search experience, which Google aims to avoid at all costs.

Let’s take a closer look at how duplicate content creates several SEO-related problems:

Negatively Impacts Your Rankings

Google’s primary goal is to provide searchers with unique, valuable content. They want to showcase original, helpful information, not duplicate content that’s been copied or rehashed from other sources, including your own website.

To achieve this, Google Search prioritises and ranks original content using automated search ranking systems.

When Google encounters multiple similar pages, it works to identify the original source. However, if it’s unable to determine the original, your rankings may suffer, and the page might not appear in search results at all. 

It gets tired of seeing the same thing over and over, so it’ll sometimes say, ‘We’ve seen this before, so we’re skipping it.’

And in the case of your content still ranking, Google will select a version you didn’t intend to appear in SERPs. It can potentially display an outdated or incomplete version that might hurt your brand’s credibility.

Affects Your Site’s Crawlability

For your content to appear in search results, search engines like Google need to crawl and index it. 

If you have duplicate pages on your site, they can consume your crawl budget—the time and resources search engine crawlers allocate to your site before moving on—by causing them to review multiple versions of the same content. This limits their ability to discover and index other important pages on your site.

Leads to a Penalty

We have mentioned before that Google does not penalise sites for duplicate content. It’s true, but it can still happen.

Just always remember that this is extremely rare. It only leads to penalties if Google suspects that duplicate content is being used to manipulate rankings or deceive users—such as through content scraping or deliberate keyword stuffing.

For instance, if a site frequently publishes copied content from other websites without adding unique value, or if it creates numerous pages with only slight variations to dominate specific keywords, Google may take manual action. In severe cases, it will result in a complete deindexing of a website.

Source: Google Search Central

As long as you focus on quality content and avoid deceptive SEO tactics like keyword stuffing, you’re unlikely to face any penalties for duplicate content.

Weakens Your Backlink Profile

Backlinks are important for SEO. Think of them as votes of confidence from other websites, indicating that your content is valuable and trustworthy. However, duplicate content can weaken your overall backlink profile in two ways:

1. Diluted Link Equity: When you have multiple pages with similar content, backlinks pointing to them get divided. Imagine you have two identical pages on PC troubleshooting, each with some backlinks. Instead of one strong page with a combined 50 backlinks, you have two weaker pages with fewer backlinks each. This weakens the overall authority Google associates with your content.
2. Competing For Ranking: Search engines may struggle to determine which duplicate page is more relevant for a specific search query. This can lead to both pages competing with each other for rankings, potentially lowering the visibility of both.

Causes of Duplicate Content

Duplicate content can stem from different causes, including:

Multiple URL Variations

Your website can unwittingly create duplicate content through seemingly minor variations in its URLs. Here are some common culprits to watch out for:

Trailing Slash

Search engines may view ‘www.example.com/page’ and ‘www.example.com/page/’ as distinct URLs, even though they point to the same content.

WWW vs. non-WWW

Websites can be accessible through both versions (e.g., ‘example.com’ and ‘www.example.com’). Search engines treat these as separate URLs, potentially leading to duplicate content.

HTTP vs. HTTPS

Security matters! If your website operates on both unsecured (HTTP) and secure (HTTPS) connections, search engines might see them as different versions. For instance, ‘http://example.com’ and ‘https://example.com’ could be considered duplicates.

Case Sensitivity

While search engines like Bing may treat URLs as case-sensitive, Google does not.

Meaning, seemingly minor variations in capitalisation can create duplicate content issues:

• example.com/page
• example.com/PAGE
• example.com/pAgE

These would all be seen as separate pages by Google, potentially harming your SEO. Make sure all internal links on your website use the same case for your URLs. This avoids directing users and search engines to unintended variations.

Parameter-Based URLs

When it comes to e-commerce websites, they often use parameters for product sorting and filtering. While helpful for user experience, these parameters can create duplicate content if they don’t change the actual page content.  

Remember that search engines can be quite meticulous. Did you know that to them,  ‘http://www.example.com/keyword-x/’ and ‘http://www.example.com/keyword-x/?source=rss’ are considered entirely different URLs? The second URL might help you track where users came from, but it can also create duplicate content issues—definitely not ideal for SEO.

This isn’t just an issue with tracking parameters. Any parameter added to a URL that doesn’t change the actual content can cause duplicate content. This can include parameters for:

• Sorting products by price or popularity
• Displaying specific sidebars
• Tracking user preferences

Content Syndication and Scraping

Both content syndication and scraping can lead to duplicate content issues, potentially overshadowing the original source. Let’s understand the difference between the two:

Content Syndication

It refers to the authorised sharing of your content on other websites or platforms. It’s a legitimate strategy to increase your content’s visibility and reach a wider audience. However, if not managed carefully, it can create duplicate content problems.

Content Scraping

Content scraping is the unauthorised copying and republishing of your content on other websites. It’s a dishonest practice that often violates copyright laws. Scrapers use automated tools to steal your content without permission.

CMS Configuration

Content Management Systems (CMS) are powerful tools, but their configuration can inadvertently create duplicate content issues. Here’s how:

Pagination

CMS platforms often paginate content when a page is overloaded with items (e.g., blog posts, products, comments). Each paginated page has a unique URL, typically differentiated only by a page number parameter like ‘/page/1,’ ‘/page/2’ and so on. Search engines might mistakenly index each paginated page as a separate entity.

Site Taxonomies

Several CMS platforms generate pages for tags and categories, listing content associated with them. Each category or tag has a unique URL. However, if a piece of content falls under multiple categories, it results in several URLs pointing to the same content.

Say you have an article discussing the importance of hiring an SEO agency that falls under the ‘SEO’ and ‘Marketing’ categories. Your CMS might generate URLs like:

• www.yoursite.com/seo/hiring-an-seo-agency
• www.yoursite.com/marketing/hiring-an-seo-agency

They will lead to the same post, which can cause duplicate content issues.

How To Find Duplicate Content Issues

We know you’re worried about duplicate content—it’s one of the most frustrating issues for website owners and SEO agencies. Not only can it confuse search engines, but it can also harm your rankings, causing your content to be overlooked in favour of duplicate versions.

Fortunately, there are tools and strategies available to help you identify and resolve duplicate content issues before they impact your SEO. Here are some of them:

Screaming Frog

To find duplicate content through Screaming Frog, download the SEO Spider. This is available for free and allows you to crawl up to 500 URLs.

Step 1: Crawl The Website

Launch the SEO Spider and enter the website URL you want to crawl into the ‘Enter URL to spider’ box. Click ‘Start’.

Image Source: Screaming Frog

Wait for the crawling process to complete (100%), but you can monitor the progress in real time.

Step 2: View Duplicates In The ‘Content’ Tab

To view potential duplicate content, navigate to the ‘Content’ tab. Here, you’ll find two relevant filters:

• Exact Duplicates: This filter displays URLs with identical content in real-time during the crawl.
• Near Duplicates: This filter requires post-crawl analysis to identify pages with highly similar content. It will be populated with data after the crawl is complete.

Image Source: Screaming Frog

Step 3: Click The Crawl Analysis Tab

To analyse for near-duplicates, click ‘Crawl Analysis’. Click ‘Start’ after the initial crawl is complete. This will populate the ‘Closest Similarity Match’ and ‘No. Near Duplicates’ columns in the ‘Content’ tab.

If you’ve previously configured Crawl Analysis, ensure that ‘Near Duplicates’ is checked under ‘Crawl Analysis > Configure.’ You can uncheck other less-needed post-crawl analysis options to speed up the process.

Once the analysis is complete, the progress bar should reach 100%, and the filters will no longer display ‘(Crawl Analysis Required).’ You can then review the populated near-duplicate filter and columns.

Step 4: Check the ‘Content’ Tab, ‘Exact’ and ‘Near Duplicates’ Filters

Once the post-crawl analysis is complete, the ‘Near Duplicates’ filter and associated columns (‘Closest Similarity Match’ and ‘No. Near Duplicates’) will be populated. These columns will only display data for pages exceeding the specified similarity threshold.

While some near-duplicates may be legitimate (e.g., variations of products), review flagged pages to determine if they should be:

• Consolidated: Merged into a single, more comprehensive page.
• Improved: Enhanced with unique content to differentiate them.
• Removed: Deleted if they are no longer relevant or valuable.

Step 5: Using The ‘Duplicate Details’ Tab, View Duplicate URLs

For a quick overview of exact duplicates, simply filter for ‘Exact Duplicates’ in the main window. These URLs will be grouped together and share the same hash value.

Image Source: Screaming Frog

As you can see, each URL has an exact duplicate because of trailing and non-trailing slash versions.

In the case of near duplicates, click on the ‘Duplicate Details’ tab. This will populate the lower window pane with the ‘near duplicate address’ and similarity score for each identified near-duplicate.

Image Source: Screaming Frog

Step 6: Export Duplicate Content

You can export both exact and near-duplicate URLs in bulk using the ‘Bulk Export’ feature. Select ‘Content > Exact Duplicates’ or ‘Near Duplicates’ to export the relevant data.

After the initial crawl, you can further refine your analysis by adjusting the following settings:

• Similarity Threshold: Modify the threshold to identify content with a higher or lower degree of similarity.
• Content Area: Specify the specific content areas (e.g., headings, body text, meta descriptions) to be considered for near-duplicate analysis.

Google Search Console (GSC)

Google Search Console (GSC) is a free tool for monitoring your website’s indexing status. It can identify issues like duplicate content that may be preventing your pages from appearing in search results.

Step 1: Set Up GSC

To begin, all you need is a Google account. Once you’re done, open Search Console and add your site, verifying ownership. This step is required since the Search Console provides site-specific insights and tools that only site owners should access, including features that influence how your site appears on Google.

Step 2: Access The ‘Pages’ Report

Navigate to the ‘Indexing’ section and click on the ‘Pages’ tab. The report will show you the number of indexed and unindexed pages.

Step 3: Identify Duplicate Content Issues 

To view why certain pages weren’t indexed, scroll down. Look for the ‘Duplicate, Google chose different canonical than user’ error. Clicking on this will display a list of affected pages.

This will open a report with a chart tracking affected pages over time and a list of duplicate URLs.

Fixing Duplicate Content Issues: Best Practices To Follow

Let’s look at the best practices you can follow to prevent duplicate content issues—or fix any that already exist.

Implement Canonical Tags

Also known as rel=“canonical” tags), canonical tags are HTML code snippets that specify the preferred URL for duplicate or nearly identical content. By using a canonical tag, you tell search engines which version of a page is the primary source and should be indexed. You can find the canonical tag within the <head> section of a website’s HTML code.

Self-referential canonical tags, which point a page to itself, can protect your content from being scraped. This helps ensure that your content is recognised as the authoritative version.

Keep in mind that the specific method for adding a canonical tag to your page will vary depending on your content management system (CMS), such as WordPress, Webflow or others.

Set Up 301 Redirects

It may not always be possible to fully prevent your system from generating incorrect URLs for content, but often, you can set up redirects to resolve the issue.

This is why you should implement 301 redirects when necessary. A 301 redirect acts as a permanent forwarding address for both users and search engines. It instructs them to move from one URL (the old one) to another (the new one). This method is ideal for duplicate content you no longer need, such as situations where you’ve:

• Migrated from HTTP to HTTPS: Ensure a secure connection by redirecting old HTTP URLs to their corresponding HTTPS versions.
• Moved a Page to a New URL: If you’ve changed the URL of a page, use a 301 redirect to send users and search engines to the new location and avoid broken links.

Let’s say you’ve renamed your product page from ‘www.url.com/product-xyz’ to ‘https://url.com/xyz-product.’ To make sure visitors and search engines are sent to the updated URL, you would implement a 301 redirect from the old ‘product-xyz’ page to the new ‘xyz-product’ page.

This helps maintain your page’s SEO value and ensures users don’t encounter a 404 error when trying to access the outdated URL.

Consolidate Content

Consolidate posts that cover similar topics into a single, comprehensive piece of content to avoid duplicate content issues. This is particularly relevant for large blogs with thousands of articles, where unintentional duplication can occur over time.

Perform a Regular Content Audit

Regularly conducting site and content audits is a proactive approach to prevent duplicate content. These audits help you identify existing content, assess its performance and plan future content creation.

You can start by developing a strong SEO strategy to maintain a clean and efficient content library. By following a systematic approach to content creation and regularly auditing your content, you can avoid producing duplicate content and ensure that your website’s resources are used effectively.

Final Thoughts

Yes, it’s unlikely that you’ll face penalties or deindexing due to duplicate content, especially if you don’t use deceptive SEO practices in the first place. If you won’t get penalised down the road, why should you care? Why should you go through so much effort in using tools and implementing fixes?

Ask yourself this question: But what about your ranking and SEO performance in the long run? While search engines may not directly penalise you for duplicate content, they might not give your pages the full ranking power they deserve.

Your rankings and website traffic may be diluted. You’ll miss out on higher positions and organic traffic.

That said, don’t stress yourself out too much. While it’s important to stay on top of your content and SEO, perfecting everything at once isn’t realistic. Focus on regular audits, make incremental improvements and don’t get overwhelmed by every small issue.

However, if duplicate content and its potential impact are still bothering you, and you don’t know where to begin, Roots Digital Malaysia is here to help. We are an SEO agency that specialises in content audits, SEO strategy and website optimisation. We can guide you through the process of identifying duplicate content, setting up the right tools and implementing best practices to improve your site’s SEO performance.

Don’t let duplicate content hold you back. Contact us today and we’ll help you take the next steps confidently.

FAQs

Is duplicate content still bad for SEO?

Yes, duplicate content is bad for SEO. Although search engines like Google may not penalise you, it can confuse search engines about which version of the content to index and rank. This can result in your pages not getting the attention they deserve, as search engines might choose to rank one page over the others.

How do I fix duplicate content?

To fix duplicate content, here are some strategies you can use:

• Canonical Tags
• 301 Redirects
• Regular SEO & Content Audits

How to detect duplicate content?

You can detect duplicate content using different tools like Google Search Console, Screaming Frog, Semrush and SE Ranking, among others. You can also perform a search with quotation marks around a portion of your content to see if it appears elsewhere.