CheckBrowsersSupport is a browser extension designed to verify the compatibility of web technologies across various desktop and mobile browsers. Utilizing the most recent data from MDN, this tool ensures up-to-date information is at your fingertips. It operates seamlessly offline, offering convenience regardless of your internet connectivity. The extension's intelligence shines through its ability to identify the optimal match from selected text, simplifying the process into just two straightforward steps: select and click. Compatible with any website, from StackOverflow to GitHub, this extension is a versatile tool for developers. Available on Chrome and Firefox, CheckBrowsersSupport caters to a wide range of users seeking browser compatibility insights.