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Are HTTPS and HTTP pages considered to have duplicate content?

Yes, HTTPS and HTTP pages are considered to have duplicate content if they have the same content but are served over different protocols. This can negatively affect your SEO (Search Engine Optimization) as search engines may see them as two separate pages with identical content. It's recommended to use a 301 redirect from the HTTP version to the HTTPS version of your site to avoid this issue and ensure that only one version is indexed by search engines.


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HTTPS (Hypertext Transfer Protocol Secure) and HTTP (Hypertext Transfer Protocol) are two protocols used for transmitting data over the internet. HTTPS is the secure version of HTTP, where the 'S' stands for 'Secure'. It means that the data exchanged between your browser and the website is encrypted, providing a secure channel for sensitive information like passwords and credit card numbers.

When a website is accessible via both HTTP and HTTPS, it can lead to duplicate content issues. Duplicate content occurs when the same content appears on the internet in more than one place. In this case, the same content is accessible through two different URLs - one with an HTTP prefix and the other with an HTTPS prefix. For example:

  • HTTP version:
  • HTTPS version:

From a search engine's perspective, these are considered two separate pages with identical content. This can be problematic for several reasons:

  1. Search Engine Rankings: Search engines like Google aim to provide the best user experience by showing the most relevant and unique content in their search results. When there are duplicate content issues, search engines may have difficulty determining which version of the content to index and rank. This can dilute the visibility of your content and potentially lower your rankings.

  2. Link Equity: Backlinks are an important factor in SEO. When other websites link to your content, it signals to search engines that your content is valuable and authoritative. However, if inbound links are split between the HTTP and HTTPS versions of your site, the link equity is also split. This can weaken the overall strength of your backlink profile.

  3. User Experience: Having both HTTP and HTTPS versions can confuse users and search engines. Users might see security warnings when accessing the HTTP version, which can erode trust and lead to a poor user experience.

To avoid these issues, it's essential to choose one version (preferably the HTTPS version for security reasons) as the canonical version and redirect the other version to it using a 301 redirect. A 301 redirect is a permanent redirect that passes the majority of the link equity to the redirected page. This tells search engines that the HTTPS version is the authoritative version and that all rankings and link equity should be consolidated there.

Implementing a proper redirect from HTTP to HTTPS not only resolves duplicate content issues but also enhances the security of your website and improves user trust. It's a crucial step in maintaining a healthy, SEO-friendly website in today's internet landscape.


Why content duplication is bad?

Are pages with and without a trailing slash considered to have duplicate content?