Lights Off

Turn Off the Lights is a free and useful browser extension for your favorite web browser. It provides focus on the video you are watching and makes everything around the video go dark. It works for all video sites such as YouTube, Vimeo, etc and also on social networking sites. Focus Now. Always. Everywhere.

Browser Lamp

When the installation is complete, you will see the light gray lamp listed in the toolbar. And with one single click on the button, it will darken the current web page. And provide you the focus to the video player. If no video is found on the current web page, then the entire page will go to dark.