I've been trying to do this for months! Finally, facebook released a way to do this without screenshot addons and "Auto-click Old Posts" extensions that dont even work.
Just go to: https://www.facebook.com/settings?ref=mb and click "Download a copy of your Facebook data."
A few hours later, you'll receive an email with a link to do so.
Why should you do this?
You never know when your account is going to be reported and deleted.
You never know when the government is going to shut down the internet.
You never know when you want to make your facebook page into a photo poster (My original goal)
