Simple YouTube Windowed Fullscreen is a free Chrome extension developed by srnyx. It allows users to open YouTube videos in their own pop-up windows, providing a windowed fullscreen experience. This extension is especially useful for those who want to multi-task while watching long videos or movies, as it allows them to easily manage the YouTube video's display and access their taskbar.

With only 12 lines of code, Simple YouTube Windowed Fullscreen offers a straightforward solution for users who prefer to watch YouTube videos in a separate window rather than within the browser tab. The extension is easy to install and use, making it accessible even for those with limited technical knowledge.

While the extension was developed in just a few hours, the developer is open to adding new features and fixing any bugs that may arise. For those interested, the source code is available on GitHub.

Overall, Simple YouTube Windowed Fullscreen provides a convenient way to enjoy YouTube videos in their own pop-up windows, enhancing the viewing experience for users who prefer a windowed fullscreen display.