HTML elements, also called HTML tags, are bits in the HTML of a website that specify the relation between the current document and an external resource. They look like this: link rel= "..." and can be used for all kinds of things, like importing a stylesheet. SEO related link elements are, for instance, the rel=”canonical” link element, which is used to avoid duplicate content issues.Read the full article
Ask Yoast: Several link tags on a page
Getting the hang of using HTML link elements (or tags) isn't easy and may leave you wondering if you're doing it right. For instance: does having several link tags on a page have an impact on your SEO? This Ask Yoast goes into that!