the point is not to have multiple bookmarks with the same url in single folder
randomize every url...
add something like this at the end of url
Do more on the web, with a fast and secure browser!
Download Opera browser with:
maybe there is something special with mac, I don't have experience with it...
but in windows drag and drop works fine, in Opera native manager and V7 Bookmarks
if you can't do it with drag and drop, you can select folders (in Opera native) clicking on check-circle in left corner and then right click and choose cut from context menu... after that, paste it where you want
I did tested first two extensions that you posted, in Opera stable standalone (usb) 58.0.3135.53
I had some problems at the beginning...
when I installed them, I couldn't see any of them on my extensions page and Opera kinda frozen...couldn't load any page
but after restart everything worked
I see previews on google search and notepad works (as far as I can tell)
btw. Opera is preventing extensions from injecting stuff on search results
you need to enable it first on opera://extensions
can you pls post the link to some of those extensions that do not work in Opera portable?
so that others can test it...
you can use V7 History for that
either search for facebook in search field...
...or even better, simply click on facebook icon in sidebar list
this will act as a search for facebook in all titles and url's in history (much faster without typing in search field)
when you get results, there will probably be some items that are not from facebook domain
(like google results in red because there is a term facebook in title)
if you wish to filter only results from facebook domain, click on search term on top (in green)
this will give strictly results from favicon domain that you clicked
then click three dots on the top left corner and choose delete all
ps. this can be very slow process if there is a lot of url's (more than 100)...pls wait until extension is finished deleting