Duplicate content

Duplicate content is a term for information that is found on more than one web page (multiple URLs).

The moment search engines like Seznam or Google come across duplicate content, they exclude one URL from their search results.

Duplicate content is therefore one of the terms of search engine optimization (SEO). This is because it threatens the positions obtained in search results and can lead to the removal of both pages.

The prevention against duplicate content is both proper linking (to the entire URL, for example with www) and the use of canonical links.