version 4 is perfect! Thanks a lot!

Nice Options ! Worked simply !
A suggestion : The GUI of the sub-options could be made visually more pleasing.

Most buttons dont work. Only "elect all" and "select none"

fast, precise and does the job of removing duplicates and empty folders.

Really nice and stable. Love the options. Would be nice if the list of dubs has clickable links (and the list stayed on top) so you did not have to use copy/paste and vice versa.

Endlich!!! Genau was ich gesucht habe! :)

I wanted this to work.. as I have over 8 thousand bookmarks (ridiculous). It loads and finds, but 3/4s of the drop down seems to to be.. gone? I assume there is something that is supposed to fill that space. Ho hum.

I wish to merge folders with the same name, sort bookmarks.

Excellent. Thank you. That saved me a lot of work.

Easy, quick, works. In a bunch of clicks it managed to remove duplicates and empty folders.

Works cool.

Good, fast and light.

Me encanta que me ahorro todo el tiempo que tenía que invertir para depurar a mano los bookmarks repetidos.

Lost most of my bookmarks... and DAMN I didn't back up first...*(&*%#

#edit dec 4th 2017: I could get a backup and almost have all my (duplicate) bookmarks back.
@Martin: I didn't press an unfortunate button combination. What I did was start the add on, select 'keep first, remove duplicate'and then pressed GO. I have almost 5000 bookmarks in total (dupes included), so the progression bar went by every 20%, until 100% was reached. It then took quite some minutes for Firefox to get up and running, only with just a fraction of the bookmarks that it supposed to have (should have been nearby 2500 left, which it didn't). So there's something with the amount of bookmarks that the add-on is limited to process....

PS: If you want, I can contribute to your project and help translate to dutch

Thanks for the good add-on to check the dupe bookmark!
It's better to add an option to show the complete web address and improve the UI.

Just works. Simple, obvious UI, does what it says without unnecessary garbage.

Amazing -- removed all 700 of my duplicate bookmarks exactly as advertised!

I had 2100 duplicate bookmarks and 100s of empty folders, this add-on cleaned them up in less than a minute.

Just installed this yesterday. I am very happy with the way it works. After X marks butchered my bookmarks, this removed 1000's of duplicates. Thank You for this extension

Simple, visually informative. I'm happy.

查找重复标签的速度很快！但是有的标签没找到两个重复的也会显示到重复的清单中。希望能把相同的url排到一起，方便勾选，谢谢。