Duplicate content is content that is published more than once on the website. In general, any content from a website that is similar to other sites or other pages of the same site is recognized by Google as duplicate content. Any content that is produced should only be published on one page of the website and be available to users with a unique address. Duplicate content can be created in three ways: all the content of one page is similar to another page, the title and description of one page are similar to another page of the site, or the title and description of the content of a page are not the same, but the text is the same
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The impact of duplicate content on site SEO
Unique and new content is of particular importance to Google, and duplicate and copied content is worthless and unimportant in Google's view and does not play an effective role in the site's SEO . Google takes action against a site that has produced duplicate content when that site has duplicated content with the purpose of deceiving and manipulating the search results. If Google finds out that a website is trying to deceive it, it blacklists that website and removes it from the search results. This will destroy all the actions that have been taken to improve the site's SEO . Using duplicate content confuses the Google search engine and search robots. For this reason, the credibility of the said site among Internet users decreases and the domain rank of the site also decreases.
Solutions to improve the quality of site content
Choosing appropriate, new and non - titles and tags
The relevance of the content to the topic and keywords used in the content
Proper use of H1 to H6 tags
The freshness of the content
Not using copied and duplicate content
Linking the words in the content to previous content or other reliable sites
Citation of sources in case of using the contents of other sites
The impact of duplicate content on site SEO
Solutions to solve the problem of duplicate content
301 redirect _
One of the best ways to prevent duplicate content from being indexed is a 301 redirect . This method changes the path of search engines and internet users so that they do not see duplicate content and only visit the main page. In this way, duplicate and similar contents are removed; So, if you don't intend to completely remove duplicate content, don't use this method.
Another way to solve the problem of duplicate and similar content is to use the Rel=Canonical tag . This tag should be placed in the head part of the site's HTML. In this way, unlike 301 redirect, similar content is not deleted. This tag tells search engines that this page is a copy of the link. Look carefully at the following example:
This tag tells the search engines that the desired page is a copy of the address articles and its content should be completely transferred to the new address. Large and small letters are effective in creating duplicate content, and the same letters should be used so that the content is not recognized as duplicate. Consider the following example:
The only difference in the above addresses is the writing of the two words " design " and " website " in upper case or lower case. Search engines recognize all these addresses as a different page and consider their content to be duplicates. By using the rel=canonical tag in the second to fourth cases, you can tell search engines that the next three addresses are the same as the first.
code noindex, follow
You can use the noindex, follow code to prevent duplicate pages from being indexed by search engines. This allows search engines to crawl the specified page without indexing the page.