To perform this, you need Google Chrome due to the fact that you are going to use a Chrome extension to do all the stuff for you. Facebook post supervisor is a Google Chrome extension that lets you erase all Facebook Posts in a single click.
If you like to change the privacy of all posts from "Public" to "Buddies", or from "Buddies" to "Just me", or "Public" to "Just me"-- it is all possible with a filling a type and hitting a button.
How To Erase All Facebook Posts
You can discover posts which contain a keyword and alter the personal privacy of those posts or delete those posts. It is also possible to delete all Facebook posts that were posted in a month of the year, for example, I can erase posts that were produced in the month of November 2017.
Facebook tagging is one of the important things that irritates when you have got a buddy who tags on every image or his/her profile photo. You might not always go to their photo and untag yourselves every time he or she tags you on an image where you do not belong.
Utilize Facebook Post Supervisor helps you to change the privacy of such posts rapidly by searching those posts in your Activity Log utilizing the keyword, "tagged".
You can also learn ways to erase all messages on Facebook. Although this is a 2014 technique, the extension appears to be working, How To Erase All Facebook Posts.