This is a good addon. I don't know why it is underrated. Maybe it's because sometimes it doesn't speaks whole sentence but word by word. There is also a small bug that if I enabled the addon, I can't not use drag-text function which is original in Firefox. Hope it will improve.

might be one of the worst extensions ever for TTS. it hurts the ears and is hard to understand.

It can only read copy-pasted text in a separate window. The voice is disturbing and hard to comprehend.

Please look for Android device.

Doesnt have tts voice select. kinda useless

The pause button does not work. Bug reported.

Postscript – if it helps, I find pause not working with at least two other extensions:

https://addons.mozilla.org/addon/native-text-to-speech-tts/reviews/1494393/

https://addons.mozilla.org/addon/text-to-speech-freeapps/reviews/1494400/

muito boa me ajuda muito , tenho muita dificuldade com letras muito pequenas

A pretty nice and interactive tool, that doesn't work on all websites however.
I also noticed a bug in the extra text window that opens up when you click on the extension icon:
Once the text inside the text field was read out loud to the end, nor it no any other text you paste in there can be read until the "Reload UI" button is pressed.
Also give me a dark theme, please \[#_#]/

It can be better to keep TTS open, even after speaking, for the convenience of reading again and again so that TTS isn't re-selected and reopend to speak.

Просто не работает.

Works with default speech voice. Randomly changes from female voice to ugly computer voice. No play speed controls.

A proposta é boa, mas o recurso "Auto detects language" não funciona bem.

I will give 5 stars if you let the user modify the PITCH or SPEED.

This isnt working on linux :/ it not give any errors, the play button show up and all but no sound.