Only works on some sites, on others it either has no effect or Linux firefox 143.0 (snap) resets the video page on any attempt to change the volume, resetting to a max of 100%. Slightly better than other addons which completely fail. update: retested and causes "A network error caused the media download to fail part-way." on scrub-scrolling the video.

if you go on ezgif.com and have this extension enabled it won't let you playback any video/gif, otherwise works great

High Resource Usage in idle

Doesn't work on zoom meetings.

I had to stop using this add-on because I am somewhat concerned about the newly requested permissions. I don't see a reason why these should be required.

causes videos to lose sound from time to time. Ok when it works

no se guarda la configuracion del volumen en la pagina que uso frecuentemente, tengo que bajarle al volumen cada vez que manejo la pagina de videos.

It used to work, but now it doesn't

It doesn't work the way it should. There is no way to make it set a tab's volume and have it STAY at that volume. It has the ability to adjust a tab's volume, but the tab has to already be playing sound for it to work. For example: Reels on Facebook are insanely loud every time you go to the next Reel, even if you adjust the volume down to 10% with the add-on. You have to go to the next video, then open the add-on and adjust the volume for each one.

Is google but needs to be checking if the volume is actually what it says, EG if a new video starts playing the volume isn't boosted anymore! EG Netflix goes to the next episode and the volume is back to normal, if this is fixed its a 5/5 addon!

Inconsistent performance. Volume slider doesn't always work and often mutes volume instead of increasing it

Addon works as expected, but appears to be injecting it's functional JS into any and all WYSIWYG editors on page. For example, if you have this plugin enabled while editing a page in WordPress, this addon injects it's javascript into the text field. If you save and reload, the script is injected again, over and over.

Once this issue is resolved, I'll update my review.

TL;DR - Don't use this addon. Use Equalizer Plus instead.

It increases the volume of videos, but there are three flaws with this addon.

The first flaw is that the interface of the addon popup doesn't look very good.

The second flaw is that I think the video has to be playing for the sound adjustments to take effect. I don't think that the sound adjustments work if the video is momentarily paused. But other sound booster extensions don't have this problem and will let you adjust the volume even if the video is paused.

The third flaw is the most serious. If you adjust the sound using this extension, the fullscreen button in the video (F11 still works) will quit working. 99% of all sound booster addons have this same exact problem. But I found an extension that lets you do both - increase the sound volume AND use the fullscreen button. It's called Equalizer Plus. Someone also suggested another addon that also lets you increase the sound volume AND use the fullscreen button, but I didn't try it and the interface looks bad so I don't want to try it. But there you go. There are at least one or two addons out there that let you use the video's fullscreen button (which I prefer over using the F11 hotkey) after you've made sound adjustments. I highly recommend Equalizer Plus. The interface looks better too.

Actually, there is a fourth flaw. There have been reports that this addon has ads/tracking and malicious code. One guy on GitHub actually took this extension, removed the ads/tracking and made a new version of the addon with the same name, which you can find on GitHub. But I recommend not using either version and using Equalizer Plus instead.

Works ok but now can't create Twitch clips bcs it breaks the website

Volume master is a lot better. This one doesn't raise the volume a lot at all and if you have to refresh the page it goes back to a 100 and you have to raise it again.

unfortunately it no longer works: I used it for certain guitar course videos published at low volume on their platform (Breakthrough guitar ) but for about a couple of weeks it has no longer worked, the video becomes totally silent and it is necessary to refresh the page to restore the audio. Previously there were only a few videos every now and then for which the extension caused an error and the video didn't start , but many others were amplified correctly. Can you solve it?
At the moment the only possibility is to do a double pass, wasting time, taking the video link with the video download extension and then viewing the stream in VLC... thus being able to manage amplification.

Whenever the next video plays the sound goes back to low. Really annoying having to increase the level for each video, especially when the videos are really short like in the Udemy Learning course I'm doing

Doesn't work anymore, at least not on twitch/YT anyways

Causes an audio delay when starting/seeking through a video.