@burnout426 Thank you so much as well! For someone dealing with 200+ tabs, not having them as a list to close what I don't need anymore was a nightmare.

Awesome for keeping multiple tabs saved without them using too much memory.
I've observed a problem though, I curently have 146 tabs opened and when I click on the tab and click inside it, it no longer loads. (I'm not using load on gotFocus because when having too many tabs I tend to click on the one I do not want by mistake.)
To load them again I use the back (return to previous page) button though.
Still love the extension. ^_^
Using Opera 62.0.3331.99.
Using Windows 1809.