не работает, никак

Any video downloaded by this add-on has a HUGE watermark on it which can only be removed if you pay the developer extra money. None of this is mentioned on the add-on homepage. This add-on is a scam. The high number of five star reviews is shady and screams botting. Your time would be better served by reporting this add-on as a scam to Mozilla.

I dislike having to play videos in order to detect the format when I can utilize other online websites, like savetubeonline, by simply copying and pasting the URL.

Yeah, you can download a video from YT just fine, but then there is a MASSIVE QR code in the corner and the only way to get rid of it is by paying them $28. I hate this kind of shit. There should be a warning on the app page that they're going to try to charge us! I suspect the high rating is due to botted ratings. No person in their right mind would be OK with this shit.

Improved; works about 75% of the time, especially after the most recent Firefox update.
Works in the microsoft abortion known as windows 10 with occasional crashes (although that could just be this unstable cluster f*ck called windows 10), but really slowly most of the time.

Adds a large QR code! Sucks!!

Demands external app to download.
Absolute no-go!!!

Adds a giant QR code to bottom of video. Zero stars.

$30 to remove the QR code that covers up a good chunk of the video is ridiculous. It's also quite clear that they are botting reviews now as a bunch of 5 star reviews with bot names have flooded in after this update. I would have considered throwing in $5 to this project but now I think that this add-on should be reported for botting reviews. Very disappointing.

How can this piece of crappy code that extorts you for 30 bucks to do its job properly be "recommended"?

Tried it once to download a video and it placed a giant QR code on the entire length of the video. You can only remove the QR code by paying for a license.

I recommend it, it doesn't work, but at least it makes you download an additional program from an unknown source.

O que essa extensão não te conta é que ela é inútil a menos que você pague!

Waste of time and bandwidth downloading a 6 hours video, ended up with a giant arse QR code throughout the video.

Rather useless unless you pay almost USD30.
GIANT QR-code ruins any video.

18 bucks throw away because they are death sent on asking you to download add on and put a giant QR code on the video making it impossible to watch or use

Do not recommend.

Huge QR code watermark in the corner. Makes the extension totally useless. Uninstalled.

long history of being completely useless, recent update seems to be working, kinda, but added a pointless QR code watermark. this is not 2013, tons of alternative now and no reason to paid for same function that i can get for free long ago. and theres no actual improvement or unique feature that makes it worth the price its asking.

i.e. too little too late.

XT do a much better job for free with no watermakr.

If you dont pay 28$ you are gonna get a huge watermark on the downloaded video

Its been free for years. Now suddenly, it puts a giant QR code on your video download and requires you to pay $28 USD to get it removed.
Guess what? I would have donated $28 if you had just asked for it. Now I will simply not use this extension and leave a bad review instead.