Compare Chrome extensions: Tab Autoclose Timer vs WA Self Sender - Free Messages Sender

This extension will automatically close tabs that have not been visited after timer elapsed.

30 seconds before a tab is closed automatically, the browser casts a notification of the auto close event. You can open the tab to prevent it from being closed.

Timer automatically resets when the tab is opened. The purpose of this extension is to automatically close tabs (ie. online banking, chat panels) when user leaves computer.