When I used the "select a folder" button, nothing happened. After trying several times, I just pressed the general "Dupes" button. Then I had to manually deselect many bookmarks that I wanted to keep, after using the "mark all but oldest in each group."

All seemed well... I walked away, as it was going to take a while to delete my over 4,000 dupes. I came back only 10 minutes later to see that the app crashed after deleting only 222. It said something like... some function was pending.

I restarted my browser, closed other programs and I set it up again. It crashed again before 200 deletions. What a waste of time.

The only reason, I'm not giving it one star is because the buttons let you custom search your marks to delete. The extension "Bookmarks Organizer" is the worst, where you have to delete each bookmark manually, and sometimes it doesn't give a great description of the path, so I ended up deleting useful marks. This one is better than that one.

My search for a good bookmark extension continues. Why are there so many good reviews in the past year? Deceptive.