What it does

YouTube is a popular online video service. It is used by millions of people to create, edit, publish and share video content.

It supports many video formats and sizes. When you visit YouTube, you will be redirected to a website where you can watch the video content of other people or groups.

However, the default way of watching the content is in the old-style interface. That means you are limited by the small screen area.

To watch the videos in Theater mode, you will need a larger screen. If you are in the old interface, the player will load in the old style. The Theater mode will open the player in the new style.

This extension helps you make sure you are using Theater mode.