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 !!!!

Perfectly works as intended. Can't thank the creator enough! Deleted my copied bookmarks AND my empty bookmark folders!

This superb tool got my bookmark collection out of a huge mess – a snarl that, as it turned out, contained some 15,000 duplicates, most of which were created by forces unknown to me (presumably bookmarks synchronizers) and a few by my own fumbling. To untangle this snarl, I had to use the tool's "expert mode" and get some help from Martin Väth, its creator, whose assistance was very clear and correct (as is his published documentation of the tool).

If you are getting stuck on "removing bookmarks" or any other action, then make sure to update firefox to the latest version or restart the browser. That fixed it for me! Great extension, solves my problem in a really elegant solution!