Rated 1 out of 5 stars

I am extremely annoyed that this is broken on Facebook. It's not working at all on any of the profile pictures on hovercards. I am also really annoyed that the dev hasn't been active since June.

This review is for a previous version of the add-on (4.0). 

Rated 3 out of 5 stars

I am really annoyed that this is not working with any of the Facebook profile pictures on the hovercards of public Pages. It seems the issues page is completely dead as there's no activity anymore. It was also way back in July 2015 since this add-on was last updated. I will be extremely annoyed if development has been abandoned.

EDIT: Thanks for the reply. It works fine on hovercards for friends profile pictures but not on hovercards for Pages such as public figures, businesses or organizations. Nothing happens.

This review is for a previous version of the add-on (3.7). 

Facebook profile pictures are working for me, like this: when I hover a profile pic on the main feed, Facebook shows its own pop-up with basic info about the user, including a larger thumbnail. If you hover that thumbnail you should see a large TZP pop-up.

Rated 4 out of 5 stars

EDIT: seems to be working with the 3.2 beta.

This review is for a previous version of the add-on (2.7.1-signed). 

This should be fixed in the current version (3.1); let me know if not. Facebook occasionally changes their site, requiring me to update Thumbnail Zoom Plus accordingly.