Brightness Slider Per Tab is a Firefox extension designed to enhance user experience by allowing easy brightness adjustments for web pages. This tool features a simple popup icon that provides a brightness slider, making it convenient to modify screen brightness without navigating away from the current page. It requires minimal permissions and avoids background scripts, ensuring that system resources are conserved while in use.

The extension supports a straightforward control mechanism, where users can apply brightness changes instantly through the icon or a customizable keyboard shortcut. By pressing Ctrl+Shift+L, users can quickly select the slider and adjust the brightness using the left and right arrow keys, providing a user-friendly interface for personalization. For those seeking a more permanent solution, additional configuration options are available via a provided link.