Sounds good, but how can I change the volume? It's too quiet on my computer.

Working good for me so far and I like the voice, not so robotic. Digging it. Though I'm seeing that it doesn't work on every page and I don't know why yet... Also, much like xdronetek said, I only have the female voice and no option to change it. I'm on Firefox 61 and I use a PC Windows 7. It would be nice to try out other voices.