How to Turn on
Dark Mode on YouTube
Log into your YouTube account in your browser, click your profile picture in the top-right corner, and open the dropdown menu.
Scroll through the dropdown menu and click on 'Appearance' or 'Dark theme' to access the theme customization options.
In the theme selection menu, choose 'Dark theme' to immediately switch YouTube’s interface to a darker background.
Confirm the change, and the entire site will transition to dark mode, making it easier on your eyes during use.
This setting is device-specific, so you may need to repeat the steps on other devices or browsers.