The following link, for example, contains a number of so-called query parameters that reveal who has shared the link and where it comes from. This allows tracking networks to recognize who is sharing information with whom.
https://example.com/artikel?utm_source=newsletter&utm_medium=email&fbclid=XYZ123
The example link shown here contains the information that it was sent to you via a newsletter. It also contains an ID "XYZ123", which could uniquely identify you. Can you see the question mark in the link above? Everything behind it is in most cases irrelevant for accessing the target page. The cleaned link is simply called as follows:
Sometimes, however, the parameters are also important in order to call up certain content on the pages. You can easily test this by calling up the cleaned link yourself. You should always be skeptical when cryptic strings are included in the links. You are welcome to use the open-source app "Léon" to automatically clean up the links.