it's good tool but still need some work on control. still stuck when I try to reread a previous paragraph. then after that none of the buttons work. it just stuck and keep reading.

can't read or detect text that were scanned like a photo

It is kind of sad that Firefox, unlike Microsoft Edge, needs an extension to read text on a page. That is one of my top 10 reasons why I use Edge in the first place.

Starting off with the default voice I felt it will be a 1 star rating. I went through many voice options and they are pretty much all robotic and of low sound quality. The real slap in the face occurs when selecting a Google standard voice, you need to grant extra permissions which is fine and you are redirected to Google's text to speech site (https://cloud.google.com/text-to-speech/#put-text-to-speech-into-action)
The voice on the Google site (wavenet-d) is what most people would enjoy, very natural and of high sound quality BUT it is not what you then using this addon.
This addon does what it says on the tin, >eat bean every day 8-/
Fad/Fart

it works but its super buggy. sometimes when i skip a paragraph it highlights the paragraph beneath it. and sometimes when i press stop it continues talking.

It didn't work properly for me. It highlighted text one paragraph below of what it was actually reading. When it jumped to the next paragraph, the text it was reading disappeared upwards. I could only pause it but not stop. The stop button made it move to the next paragraph. It would not stop until I disabled it completely.
It needs elocution lessons. Especially on place names: Yorkshire is not pronounced "yorksheer" not even in American English.

La verdad Sirve pero en Chromium no sirve.
En mozilla firefox Si funciona normal.

The voice is very creepy

Honestly I use this to help me speed read long books. I will normally have a physical copy in hand and pull up the web version and have Read Aloud running at 1.5x I have to read a lot by virtue of my interests and this helps, but it is certainly more useful for articles and uninterrupted prose like fiction.

I read tech/programming books. I wasn't expecting this to do a good job reading all the symbols and concatenated words but it does a relatively decent job. Some symbols are ignored or not read correctly but that's to be expected.

What's annoying is that the parser for this extension frequently skips single sentences or footnotes that are in between two larger paragraphs. So like if you have one paragraph then a sentence from the next paragraph followed by a diagram then the rest of the paragraph Read Aloud will skip straight from the first paragraph to the larger chunk of the second paragraph. sometimes the skipped part is important so i find myself pausing and rewinding frequently to make sure i got everything. It's jarring when you have a book in hand and read and hear two different things.

Feature suggestion: Consider highlighting the text that is already on the page by default. And having the option to use the modal if the page has funky formatting or something. Is there any reason why you can't just manipulate the DOM to highlight & scroll the words that are already on the page?

Overall, it's not a bad app. However there are quite a few mispronunciations and some are so bad they leave you scratching your head. For example, the current Dem. Candidate for President is not "bih-den" but instead "bahee-den" and there are many far worse than this.

Should have voice selections. Should have volume control.

The permission process to use Google Wavenet voices is no longer working. I actually purchased this addon and I'm no longer granted access to premium voices. I feel cheated.

By itself extension works fine, but there is problem when it needs to work together with other extensions, for example, to read text produced by EBUB or FB2 extension.
For example:
1. epub file opened with EPUBReader extension (works fine), but opening resulting page with 'Read Aloud' extension results in the error message:
"missing host permission for the tab".
2. Once again, separately, both extensions work fine, error appear only when data are passed from the first to the second one.