POWERFUL YOUTUBE EXTENSION for FREE
Turn Off the Lights™
"The 'Turn Off the Lights' Extension Can Do Much More Than Darken Your Browser"
Mouse volume Scroll
Scroll up or down your mousewheel to adjust live the audio
Glow effect on all your playing HTML5 videos
Get all website a darker skin. That is comfortable for your eyes when browing or reading a web page in the night
Cinema Mode for all HTML5 VIDEOS
THE BEST Browser Extension
Available for all web browsers that include Google Chrome, Firefox, Opera, Safari, and Microsoft Edge.