Themes for YouTube™ and Picture in Picture is a Chrome extension developed by Hisoft. This free program falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. The main purpose of this extension is to change the theme of YouTube™, offering multiple themes including a dark mode theme. Additionally, it allows users to enable Picture in Picture mode for videos on all sites.

To use the extension, simply click on the extension icon to turn on or off the theme. Changing the theme is easy, just right-click on the extension icon, select "Options," and choose the desired theme. Furthermore, if you want to play a video in Picture in Picture mode on any site, simply press the F9 key.

Advanced features are available on the options page, allowing users to remove black bars around videos, hide the scrollbar, and more. With Themes for YouTube™ and Picture in Picture, users can personalize their YouTube™ experience and enjoy the convenience of Picture in Picture mode for videos across the web.