Absolutely beautiful, you're a life saver.
By the way, is there any way to keep this on? It seems that every time I restart Firefox I always have to click again to turn it on.

I use Firefox for lots of things but mostly for watching Youtube, and the volume for ANYTHING, not just YT but any site that has sound, is always too low compared to literally any other program on my computer. I always have to turn FF up to max in my sound mixer and all other things down to 25% or lower, just so I can hear YT videos well without other programs blasting my ears off.
All I needed was something to INCREASE VOLUME for anything played in this browser.

So I installed this. I then spent like 20 minutes playing a video clip over & over in both FF & chrome, updating FF, refreshing tabs, closing & reopening FF, and checking the extentions settings for up-to-eleven repeatedly trying to see if it was working or not. Finally I discovered how to manually create the button to toggle the extension on/off (click on the puzzle-piece button in the menu bar, right-click on up-to-eleven when it appears in the drop down menu, and select "pin on toolbar"). Sadly that's the ONLY setting that this extension seems to have; on or off. No volume setting or anything else.

Once I did that, I was able to play a video and click that button to turn the extension on & off while the video played. And guess what? IT DOESNT REALLY INCREASE THE VOLUME. I mean it did get a LITTLE BIT louder, not nearly enough, but mostly it just changed how the sound... sounded. It changed the audio quality, the frequency, the balance, the hertz, or whatever... IDK the technicals of this stuff, I just know that the video I was testing sounded a lot WORSE when the extension was on.

Audio normalization / compression. The description doesn't describe how much of a blessing this addon is. It compresses the dynamic range within your browser, with no noticeable delay. NO MORE VIDEOS WHERE ONE PERSON IS SILENT AND THE OTHER ONE IS VIOLATING YOUR EARDRUMS!!!

Also, it makes everything louder. A bit too loud, actually. Having the video on 1/100 and windows mixer 1/100 isn't quiet enough for me and I need to turn to other methods, but at least the audio is compressed.

Doesn't seem to work on bitchute. Seems to be always off on a new tab even if the icon shows ON (you have to off+on to activate). After bugfixing, the only setting I wish it had is the usual compressor tuning (see Audacity compressor shaping min-max gain, and delays/sustain durations if that is even configurable.)

Works great on windows 10, apparently not at all on debian 11. It just makes it quieter. That is unfortunate, because windows already has built in audio compression. But it is nice that in windows at least i don't have to enable system wide audio normalization.

This does exactly what I hoped for. It compresses "normalizes" the audio so that there is no inconsistency in volume levels and outputs every moment at the same decibel. Now you wont get insanely loud jumps in audio or quiet moments will be brought up.

Wouldnt recommend keeping it on for all videos/music, because *any* audio compressor can squash the audio, on properly mastered videos/songs.

I would love to see some more controls here though. maybe not just a master volume [ceiling] leveler, but also a level to control how quiet the audio is allowed to be with a Floor setting. I believe this would be the threshold. that way you could control the window of room that the audio will be output. However the setting the creator has, is just fine and doesnt have any noticeable over compression sound

trash

I have found that sometimes sound gets too compressed to sound good. If this happens to you try turning down the level on Firefox in mixer a little. I run the player at full volume but set Firefox at about 80 but try different settings to find what works the best for you. I figure that the best setting is to turn Firefox volume as high as you can without distorting the sound by over compressing to keep the volume as near level as possible. When up-to-eleven is on it slightly reduces the volume when it compresses but turning down the volume on Firefox probably won't affect the volume unless the sound is extremely low because it won't compress the sound as much on higher level source.

Boosts low volume videos, and caps high volume videos. Super simple and -exactly- what I needed.

OMG! You are an ear savior!
Thank you very much, I am so tired of keeping my hand over the mouse with the finger over the scroll button just beacuse someone
didn't know how to properly master the audio of a simple video with a person talking with audio afect's added to make the video
more fun to watch, but the problem is that the audio efects are usualy too loud.
This extension saves videos like a lot of podcasts that I'm watching now bercause of quarentine.
I don't know how to thank you enough, what I can say is that the loudness correction of the windows don't compress the audio as
much as your do, but is not efective because it lower the volume after the aduio gets too loud, so the loudness of the winodws
was made to keep more fidelity but at the same time sacrifices constancy of decibel level.
Your extension is perfect for people talking in videos.
The loudness of windows I would use in movies but only if the movie doesn't have too many songs in it.

Works like an audio compressor, it dynamically increases the level when it's too low. Great add-on!

Doesn't seem to do anything.

Maybe this is not the addon I'm looking for, but I'm hoping maybe it could turn to be that.
Only tested it with music so far (from official label channel, so highest quality) available on YT.
- The RMS level dips quite a bit when I turn it "on" (I'm guessing turning up the GR);
- also it jumps at times when the dynamic range shifts - it makes me wonder if the gain compensation is set constant or how exactly.
- I'm using the Audio Equalizer addon from Muyor, and if both are enabled and this one is set to higher GR, I'm getting phasing issues in the sound, even in mono.

I hope the dev might further the code based on these and maybe - just maybe - we can have a great compressor or maximiser plugin in Firefox.

Absolute life saver.

This is an awesome awesome plugin! I sometimes listen to poorly recorded audiobooks and podcasts off of youtube and hate volume spikes and dipping levels.
Would love to be able to fine tune the compressor though, since it boosts hum and noise a bit too much imo.

Very underrated extension. Does exactly what it says, and does it well. I do agree with some people that the icon should really be more noticeably different between ON and OFF, but that's relatively minor.

I watch a lot of Youtube videos and I'm so sick of starting a video and setting my volume to it only to have the person talking start YELLING much louder than they talk or outright scream laugh into their mic. This helped a lot to control that.

up-to-eleven versus playback speed

https://github.com/padenot/up-to-eleven/issues/5

Nice addon. Can you make the icon change more noticeable like for example Black when disabled green when enabled or something like that? The line thing is not very noticeable. Also I noticed that if you keep turning it on and off sometimes it will boost the volume more and sometimes it will boost it less. Could you take a look at that? Thank you.

This is great for press conferences in which you wouldn't otherwise be able to hear the reporters' questions.