Bookmark Manager

Not working. It doesnt do anything when i click on it. Which is unfortunate because it looked to be exactly what I needed--a way to view all of the different bookmark 'folders' and remove duplicates. Other bookmark managers claim to be able to do it but they just don't do what I just explained. Chrome's system for bookmarks is convoluted/complicated. Probably on purpose. I guess I will just accept the fact that I have bookmark folders that I cannot manage/delete.

This extension seems to do nothing at all.