The voice volume was so low I could not understand what it was reading. It was so low because the voice sound was coming through my Mac Mini M4 built in speakers and I was about 15 feet distant. There is no apparent means of choosing where the sound output goes.

works for every 1 in 10,000 pdfs

EXCELLENT! BEST WAY TO HAVE GOOD TTS ON THE OPEN-SOURCE PLATFORMS! THANK YOU!! <3

useful for me when I forget to put on my glasses

Doesn't work

100% nonfunctional

Crashes halfway on almost every page, otherwise would be good

read aloud works (and way too loud), but volume control has zero effect; only when slid to the extreme left does the volume mute (to zero).
Review added 2026-01-30 for Ubuntu 24.04.3 LTS ; snap info firefox = 147.0.2-1 latest/stable

Routing you to the the Google TTS sales page and using the Demo box instead of hooking into the Google Cloud API is actually bananas. I can't believe that this thing still doesn't have proper voice fetching implementation after all these years.

Not the best. Agree with other users that Edge is better for reading than this. Also I don't like that it automatically sets your setting to allow this developer access to ALL your data unless you change it but even then it piggies back off of google.translate. Also doesn't even read my full text book page just the title and then the page number. I don't like the reading in the extra window either. Idk why its a recommended extension.

Appears to use translate.google.com to provide the service, and the new one on me is that extensions apparently can't block other extensions' requests, since umatrix, ublock, etc can be set to block google, and Rethink still shows FF making attempts. So, it basically reports your browsing to Google...that makes it intentionally spyware in my book. FF's own builtin "Read Aloud" will have to suffice atm.