Netflix Watched is a Chrome add-on developed by Taha Selim Aksakal. This free tool is designed to provide an easy way to hide the movies or TV series you have already watched on Netflix. With this extension, you can click the "I watched it" button to hide or make the movie or series transparent, ensuring that it will not be recommended to you again.

The add-on features a convenient widget that can be accessed by clicking the eye icon on the screen while previewing a movie or TV series. By adjusting the settings, you can choose to make the movie or series transparent or completely hidden. Netflix Watched offers a simple and effective solution for managing your Netflix recommendations based on your viewing history.