reading memes , with or without zoomtext

I am legally blind and use ZoomText for magnifacation , and screen reader . . I have been using very old versions of Zoomtext and Firefox version 53 I think since newer versions were not compatible.. Recently I was forced to update to windows 10, and therefore had to update ZoomText .. Is there a Firefox that is compatible? The thing I miss the most is that Zoomtext would read about half of the memes on Facebook .. Now with Edge, and Windows 10it will not read any of the memes .. I would really like to go back to Firefox . Any suggestions .. I am using a desktop