I use another browser (Fastbrowser) that has 'computer' voice capabilities. It is good for reading lengthy news articles to the viewer.
FireFox now has a similar capability. The extension is called FoxyVoice.
That makes FireFox a very good candidate for anyone who is visually impaired or who likes to listen, rather than read, lengthy articles.
Foxyvoice.....will have to try that out just for the novelty of it.