A canonical URL helps prevent duplicate content issues by telling search engines which version of a page is the preferred or "official" one. It helps search engines focus on the right version of your content and enhances user experience by redirecting the user to the best version of your publication instead of multiple near-identical ones.
The option is available in the Basic Settings tab from the left-side menu.
When to Use a Canonical URL:
You should enter a canonical URL in the following cases:
1. Multiple URL Variations:
2. Embedded in an iFrame:
Note: Adding a canonical URL does not affect the Publication URL. You should still fill out the Publication URL section as usual by entering a unique URL slug for your publication to ensure easy access and identification.