Canonical tag
Also referred to as the canonical tag, canonical is a kind of suggestion to the search engine, whose job it is to tell its bots which page within a domain is ‘more important’ in relation to a particular sub-page.
In practice, the canonical tag is primarily used in cases of search result generation or filtering or when, for example, we have different variants of a particular product in an online shop.
The tag canonical is placed in the <head> section, where it should point to the URL of the subpage to be prioritised. Correct implementation of the tag minimises the risk of problems with duplicate content within the site. It is worth knowing, however, that there is always a danger that a search engine will ignore the clues placed in the canonical tag.
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