https://forums.opera.com/topic/3567/any-way-to-enable-private-browsing-by-default
Any way to enable private browsing by default? | Opera forums
Jun 23, 2014 - Hey, I tried the command line edit " -newprivatetab" but it does not work. No private browsing on opening opera or a new tab within the browser. History is...
enable private browsingway toby defaultoperaforums