Connectivity Checker is a free Chrome add-on designed to keep users informed about their internet connection status. This tool provides real-time notifications when the internet goes offline, displaying a message on each open tab. It is particularly useful for individuals who rely on a stable connection for work or leisure activities.

In addition to monitoring connectivity, Connectivity Checker also detects captive portals, enhancing its functionality. This feature allows users to identify and navigate through networks that require additional login or acceptance of terms before accessing the internet. Overall, Connectivity Checker is a straightforward and efficient solution for those looking to stay updated on their internet connectivity.