@burnout426 said in Extensions in Side Bar:
https://dev.opera.com/extensions/sidebar-action-manual/ may be of some help.
Thank you for the suggestion, yet this flag does not do the job for me, I already use the "Hide from toolbar" that, in my opinion, is the same thing. I was thinking of something like putting the QR code generator next to the screenshot icon. But I guess I will have to wait for a sidebar version of the Opera extension I'm using now haha.