A pingback is basically an automated comment that gets created when another blog links to you. A self-pingback is created when you link to an article within your own blog. Pingbacks are essentially nothing more than spam and simply waste resources.
Disable self-pingbacks
Follow the steps below to disable self-pingbacks.
Step 1
Click into the Perfmatters plugin settings.
Step 2
Make sure you’re on the “General” submenu.
Step 3
Scroll down and toggle on “Disable Self Pingbacks.”
Step 4
Scroll down and click “Save Changes.”