Video Volume Booster gives you a simple slider to amplify the sound of any video in your browser, far above the normal maximum. It remembers your setting for each website, so quiet videos are loud enough the next time you visit.

Increase the volume of videos up to 600 percent with a single slider.
The extension preserves the volume you set for a website and applies it automatically when you visit the page again.
Volume boosting does not block fullscreen mode for videos.
Control the volume from the keyboard, and change the hotkeys to whatever suits you.
Use the ON switch in the popup to turn boosting on or off without removing your setting.

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