A wonderful add-on with several features (like a compressor) that set it apart from similar extensions. My only suggestion would be to make the font size larger on the volume level icon. It's barely visible now; you have to look closely to see it.

Per-Tab Volume Control is the best volume extension I’ve ever used. It would be even better if it added keyboard shortcuts.

This extension does a great job. A particular highlight for me is that you can turn down the volume on videos. I often find that videos are much too loud when you start them. It's always very unpleasant for me when videos start too loudly, but that's finally come to an end.

Does what it says on the tin. A separate make-up gain control would be usable, but the threshold seems to compensate accordingly.