
So, first of all, what is duplicate content?
Essentially, duplicate content is content that appears in multiple locations on the Internet. But this may not cut and dry as it looks. The content is too similar, even if it is not the same, it may be considered a repetition of each other.
When considering duplicate content, it is important to remember that it is not just human visitors to visit your website and compare two pages of content. It’s also about what search engines and crawlers see when visiting these pages. Since they don’t see the rendered page, they are usually removed from the page’s source code, and if that code is too similar, the crawler might think it’s looking at two versions of the same page.
Imagine you went to a bakery and there were two cupcakes in front of you looking almost the same. They showed no signs. How do you know which one you want? This happens when search engines encounter two pages that are too similar.
This confusion between content can lead to problems like ranking issues, as search engines may not be able to figure out which page they should rank, or they may be ranked incorrectly. Within MOZ Toolswe have a 90% threshold for duplicate content, which means that any page with at least 90% of the same code will be marked as duplicates of each other.

