PrimeVideo Blocks darkening1.1 is a Chrome add-on developed by koubou2024. This free add-on aims to enhance the user experience on Amazon Prime Video by providing several useful features.

The add-on offers brightness control, ensuring that the screen doesn't darken when moving the mouse over Amazon Prime Video. This prevents inconvenient dimming while watching videos.

Additionally, PrimeVideo Blocks darkening1.1 allows users to toggle the display of movie and show titles and subtitles. Users can customize the information displayed based on their preferences.

Furthermore, the add-on provides the ability to resize the control buttons for play, pause, forward, and backward actions. Users can reduce the size of these buttons in 1% increments, minimizing unnecessary elements on the screen. Despite their reduced size, the buttons remain fully functional within the range of 100% size.

Please note that this add-on has been tested and confirmed to work on the Japanese version of Prime Video, specifically catering to Japanese users.