ParaReader oleh Akshay Dewan

This is a Firefox extension that opens a modal to read the selected text with better formatting. I made it for reading emails and text that are otherwise not compatible with Firefox's in-built Reader mode.

Just select the text that you want to read and press Alt+Shift+X (or Cmd+Shift+X on mac)

Source available at https://github.com/akshaydewan/parareader