I recently tried out an App for my Mac called SocialSafe. SocialSafe is a tool that claims to back up your Social Media accounts such as Facebook, Twitter, & Instagram just to name a few. But it also allows you to export your data to your computer. Social Safe offers a free version which will allow you to backup some Facebook Features.
So after trying the free version, I was so impressed that I upgraded to the Pro Version which allows you to backup up to 4 of your Networks for $6.99 a year. I then realized that this is a very valuable tool! So I then upgraded to the Enterprise version which allows you to backup up to 10 Network accounts, plus you have the ability to backup your Facebook Pages as well. No brainer for $13.99 a year.
Here are some screen shots from my installation:
This Geek Highly Recommends SocialSafe!