Open PrintFriendly in new window/tab?

I found a 2012 article from PrintFriendly saying you just need to ‘untick the JavaScript box’ to make the print/pdf button open in a new window, but that must be outdated because that JavaScript box no longer exists, so I’m trying to figure out how to open it in a new tab instead of forcing visitors to leave the site when they click the button? (particularly as there is no back-button to prompt them back to the site)