I don't get some of the negativity here, unless it's old news. This add-on does exactly what it says it will (look for and fix duplicate, broken, and unnamed bookmarks) and looks good while doing it! There are options to correct *all* redirects or delete *all* broken bookmarks (contrary to criticisms) but care should be taken especially with the delete all option. It's not infallible; each delete should be reviewed. And the developer provides a whitelist option so that exceptions don't keep reappearing! My only suggestion: The developer should update the copyright years at the bottom (currently 2017-2019, which makes it look out of date). He's getting a donation for this (and for New Tab Override).