Massive unlike/unfollow from Facebook

gistfile1.txt

You can star on https://m.facebook.com/pages/?category=liked&ref=bookmarks

then from console:

const unlike_all = ()=> {
	[].slice.call(document.querySelectorAll('a[role=button]')).filter(x=>x.innerText=='Unlike').map(x=>{x.click(); x.remove()});
	[].slice.call(document.querySelectorAll('a[role=button][action=cancel]')).map(x=>x.click());
	window.scrollTo(0,document.body.scrollHeight);
	window.setTimeout(unlike_all, 3 * 1000)
};
unlike_all();

Then from standard version, go to liked pages and there you should see your follow too.

To unfollow
const unfollow_all = ()=> {
	[].slice.call(document.querySelectorAll('span')).filter(x=>x.innerText=='Following').map(x=>{x.click(); x.remove()});
	 
	window.scrollTo(0,document.body.scrollHeight);
	window.setTimeout(unlike_all, 3 * 1000)
};
unfollow_all();