Firelux is a free Firefox add-on designed to enhance user comfort by filtering blue light from web pages. This tool is particularly beneficial for users who spend extended periods online, as it helps to reduce eye strain and improve overall viewing experience. Key features include customizable filter color and intensity, automatic activation based on specified hours, and the ability to deactivate the filter on specific websites. Additionally, Firelux supports Firefox Sync, allowing users to maintain their settings across devices.

The configuration process is straightforward; users can easily access the settings by clicking the add-on icon. Firelux operates entirely offline, ensuring that no user data is collected. This commitment to privacy is a significant advantage for users concerned about data security. Overall, Firelux provides an effective solution for those looking to personalize their browsing experience while minimizing the impact of blue light.