We are therefore talking about URL duplication or the presence of non-canonical pages, which in effect create duplicate pages within the site.
Types of internal duplications
The following are the main types of internal duplication that can occur on a site.
3. URL duplications from filters and faceted navigation
Let's think about online shops that allow the user to filter the product search by attributes such as color, size, price range, availability, brand, seller, etc.). All these filters generate parametric urls that carry the GET parameter, containing the filters requested by the user, giving rise to systematic duplication of the page.
Using a crawler emulator like the one provided indonesia phone number by SEMrush's Site Audit feature , you can find out if there are any non-canonical duplicate pages.
Duplicate Content: Crawl Analysis with SEMrush Site Audit
How to solve internal duplications
There are essentially three levers available to SEOs.
The rel="canonical" link must be inserted in the <head> of the page and defines what must be the canonical page that the search engine must consider. Therefore all non-canonical pages must have in their heads the canonical link to the canonical page.
Be careful to consider the rel canonical as a suggestion given to the search engine and not as a command. In fact, it is not certain that the bot will follow the recommended instruction to the letter , especially when faced with problems related to an incorrect use of the canonical or when the bot is given conflicting signals, such as: