Fantastic! Just what I needed. Reduced my 13,000+ bookmarks to about 3500 and afterward, I was able to delete over 700 empty folders.
I loved that I could choose to retain the most current of each group of duplicates. Thank you. <3
...mathew

Firefox should have deduplication in bookmark management by default

amazing

simply amazing addon. A few clicks and my toolbar is dupe free and empty folder free as well!

worked perfect to delete 4631 duplicates introduced somehow by some sync problem

Found all duplicates and after selecting which ones to delete, deleted them all without any issues

Perfect. Cleaned my dupes in just a few seconds

IM PE CA BLE!!!!! Gracias !!!!