Gray Cover is a free Chrome browser add-on developed by insidedw. This tool aims to make browsing more eye-friendly by providing a gray cover on websites that do not support dark mode, even when your system is set to dark mode. It does so without altering the website's UI, offering a seamless experience for users concerned about eye strain and screen brightness.

With Gray Cover, users can enjoy a consistent browsing experience across websites, ensuring a more comfortable viewing environment. This add-on falls under the category of Browsers, specifically Add-ons & Tools, and is a practical solution for those looking to protect their eyes while browsing online.