Black Screen is a Chrome extension developed by Emmel Apps that allows users to test their display for dead pixels, stuck pixels, and other display defects. With just a single click, you can activate the full black screen mode to thoroughly examine your screen for any issues.

This extension is particularly useful for mobile device users who want to ensure the quality of their screens. By using Black Screen, you can easily check for problems such as dead pixels, stuck pixels, or backlight bleeding. It provides a simple and convenient way to identify and address any display defects.

Black Screen offers five different color modes for display testing. In addition to the black screen mode, you can also switch to white, red, green, or blue screens to further evaluate the performance of your display.

Overall, Black Screen is a valuable tool for users who want to assess the condition of their screens and ensure optimal display quality. Its ease of use and variety of color modes make it a reliable choice for display testing.