It asks for money otherwise you'll have a huge watermark on downloaded youtube videos, find another extension that does this for free.

I have no clue where the positive reviews come from. This extension requires additional software to function. I can't properly load it on any of my machines, and it's flagged as questionable in terms of safety. It's just a mess. I've downloaded and tried to use it several times over the past 5-6 years, to see if it's improved. It has not. Avoiding.

Extension Payante !!!
Après avoir installé l'extension, il faut installer un autre programme, non reconnu par Windows. Et ensuite la vidéo a un QRcode qui reste tout le long. Pour l'enlever il faut payer ! C'est vraiment une arnaque je ne comprends pas comment Firefox conseille cette extension

Extension peu fonctionnelle, ou alors payante !

Downloadhelper died when it started to ask for money (even if claims to be free). I used to be a DH user in 2014 to 2017 but now this addon turned into nothing but baloney: ask you to download a extra app to download, then burns a watermark into videos and wants you to give €20 to remove it. Developers just killed everything that made DH were good in the past

scam. wants money

requires you to download an external app (which i wouldnt be surprised if it was spyware or something lol) to download as mp3 despite it being advertised as part of the extension

I could not use this extension, it had asked me to download .exe to install in order to use it. Turns out it is a virus and trojan. Slowed down my computer and did a number on my anti virus to contained, quarantine and removed it!!

Burns in massive watermark when you download a video.

ふざけたレビュー強制機能消せ

Was a 5/5 addon before it required you to pay to download youtube videos

Was a good add-on. Is now paid software that burns an opaque watermark into your download and requires 20 Euros to remove. It tells you this after downloading the videos. yt-dlp exists BTW...

It's a paid program now, a watermark is integrated on YouTube video to sell a 20€ licence.

Still says "Your download is done" when what it means is "I downloaded part of your file and then gave up." Gave it a couple years of updates and thought trying again would prove more fruitful, but I was wrong. Still the same barely functional addon.

This app poses as a free extension and suddenly starts asking for a license

Adds an watermark and wants a donation for it to be removed so its straight up trash. Save yourself some time and do NOT DL this garbage. Just check out the creator Paul's website:
"I now run a software engineering company specialised in web engines."
This dude does not need your money. Greedy mf.

Now includes a huge watermark on videos. Deleted it.