backspace to back is a free Chrome add-on developed by abistey. This add-on allows users to map the backspace key to the "history.go(-1)" function, effectively enabling the backspace key to function as a "back" button. This can be particularly useful for users who are accustomed to using the backspace key as a navigation shortcut and find it inconvenient to use the traditional browser back button. By simply installing this add-on, users can customize their browsing experience and navigate through web pages more efficiently. With backspace to back, users can easily go back to the previous page in their browsing history with a simple press of the backspace key.