The shortlink is a simplified URL of your post. It is not exactly a short URL as it makes use of your domain name and the post ID to create the URL that may not be any shorter than the permalink. This module disables the shortlink and prevents it from showing up in your site.
Activate the Remove Shortlink Module
In the Admin Optimizer page, click to enable the Remove Shortlink module. Press Save Changes to save the changes.
No configuration is required for this module to work.
Check if the Remove Shortlink Module is Working
Before activating this module, check the source code (right-click on the web page and click “Inspect”) of your frontend site. In the <head> section, you should see a rel="shortlink" tag showing the shortlink for the post.
After activating the module, check the source code again. The rel="shortlink"