Just for the record... Rated 5 out of 5 stars

...and after reading a bunch of the reviews, I just got'a point out that if one is plagued by a out-of-control syncing mechanism and has 2400+ bookmarks, at least half of which are duplicates, this tool is really, really useful. It did keep the browser so busy for so long that I had to click 'continue' several time when the "script is taking an awfully long time" (sic) message showed up. Being a guy with little patience this was no trivial feat but I am definitely glad I stuck it out!

I agree this is useless Rated 1 out of 5 stars

1. I don't want to delete every bookmark according to their criteria. Mine are organized by files and the current ones are often somewhat different than the old files. I some are from one re-organizing and some for others, I could end up with many duplicate files and sub-files and not know where any of the bookmarks are. Since I can't choose which iteration to keep & which to delete, having 8" or more devoted to the bookmark title and 2" to the url is irrelevant now. An ideal deduplicator would group all bookmarks with the same basic URL and within each group organize them by date with the latest used first.

Thank you! Rated 5 out of 5 stars

Changing over from and old firefox sync on 5 devices caused me to quintuple my bookmarks to yield 29+ thousand duplicates. This addon cleared everything out. I was patient, it did it's thing! Thanks again, jm

Terrible UI Rated 1 out of 5 stars

Can't use full-screen, UI column-width auto updates as the scale is changed instead of allowing the user to choose what width to set ( which is disabled, by the way ) making it impossible to see the folder the bookmark is in if the title or url is too long, and by auto-scaling the width the columns jump around while scrolling making it hard to follow....

There isn't an option to only remove 1 bookmark.. It's all or none so you can't choose which folder should retain the bookmark ( it may go by date, or it may not, I'm not sure BUT some may add bookmarks originally then find the site again later on and bookmark it in an easy-to-follow structure; so this is another point off )...

As of right now, this addon is unusable.

Rated 1 out of 5 stars

Unfortunately, in over 200 instances, this addon not only removed the duplicate, but the original. Too inflexible and capricious.

Good idea, major flaw in implementation Rated 3 out of 5 stars

This Add-On has great promise, but comes equipped with a terrible limitation: As by mtnester says, it can not remove just one OR a selected range of duplicates. What happens if removing-by-URL winds up destroying a "valuable" Bookmark file ?

Seems to find duplicate titles only Rated 2 out of 5 stars

I had high hopes of this add-on, and perhaps the problem is more with Firefox 36, but while it did find many duplicates, there was no way to select individual ones so that if I deleted them all, quite a number being deleted had the same name (Pinterest boards) but different URLs, which means they aren't actuall duplicates at all.

Also, when I opened my Library, there are numerous links with numbers after them (5), (6), ... (20) which apparently were not detected by this add-on. Guess I'm stuck with deleting thousands of duplicates one by one by one by one . . .

Please update for newer Firefox, no longer working Rated 5 out of 5 stars

Can't do without this extension, there is no good alternative, please update!!! Thanks!!!

This review is for a previous version of the add-on (1.2.1-signed).  This user has a previous review of this add-on.

Rated 5 out of 5 stars

Update pleeeeeeease :(
It doesn't work with FF36 anymore

This review is for a previous version of the add-on (1.2.1-signed). 

Rated 5 out of 5 stars

Please update.

This review is for a previous version of the add-on (1.2.1-signed). 

please update it, thanks Rated 4 out of 5 stars

so far, no one can replace it!
it's not unique in the history, but it's unique now!

This review is for a previous version of the add-on (1.2.1-signed). 

Nice little add-on Rated 4 out of 5 stars

Nice little add-on. Unfortunately it no longer works, as of Firefox version 35.0.

This review is for a previous version of the add-on (1.2.1-signed). 

Rated 4 out of 5 stars

Good addon. But does not work in Firefox 35.0. Please, update.

This review is for a previous version of the add-on (1.2.1-signed). 

Хорошо, но хотелось бы большего Rated 5 out of 5 stars

В общем, работает не плохо, но... Не понравилось, что процесс очистки не сопровождается каким-либо индикатором прогресса, браузер действительно "замерзает", как говорится в описании. Не понравилось, что нельзя устанавливать запрет на сканирование определенных папок (я бы хотел, чтобы в определенных папках закладки остались, а в остальных дубли были удалены). Короче, в данном дополнении нужны настройки.

Оценка 5, т. к. со своими обязанностями дополнение справилось хорошо, выше же - мои пожелания.

Спасибо.

This review is for a previous version of the add-on (1.2.1-signed). 

good but could be better Rated 2 out of 5 stars

I might be harsh, but I like my softwares practical.
This is practical, but the utility is not, the utility only tells you in a little window what is about to be deleted, but gives you no control over what gets deleted, and also the window is not resizable so you only see the first 20 characters or so of the description & url...which does not let you kow fully what you are about to lose....

The problem is the algorythm used to locate duplicates does not check technically the full nature of the duplication...so a url may contain some slightly different characters meaning a bookmark for page one of an arrticle and another bookmark for page 2, and this utility would show you one of those as being a duplicate, which technically is not correct...especially if you have many such bookmarks.

It is the easiest and quickest bookmark duplicate manager I have seen, but needs to allow more control and windows space...

This review is for a previous version of the add-on (1.2.1-signed). 

una verga Rated 1 out of 5 stars

no sirve pa nada no te muestra ubicacion/ carpeta de los duplicados o cual elegis pa borrar

This review is for a previous version of the add-on (1.2.1-signed). 

Rated 3 out of 5 stars

All or nothing; can't choose folders.
You can't opt to keep some duplicates, all must be deleted, which won't work for me. Also, I can't choose which folders to delete dupes from. Found better alternative by googling "checkplaces 2.6.2B" .

This review is for a previous version of the add-on (1.2.1-signed). 

Neat and useful Rated 5 out of 5 stars

This saved me so much pain right now after merging two Firefox profiles! Many thanks for this neat and useful addon :-)

This review is for a previous version of the add-on (1.2.1-signed). 

One thing missing Rated 2 out of 5 stars

I get a list of duplicate bookmarks, but I don't know which folder each one is in. I'd like the choice to keep the bookmark which is in the "right" - for me - folder (I have 52 top-level bookmark folders, plus umpteen - it's a real number - subfolders). I can't delete bookmarks based on blind faith in an add-on; I need more info to be able to delete dupes. You're on the right track with Bookmark Deduplicator, but it needs more work.

This review is for a previous version of the add-on (1.2.1-signed). 

Rated 3 out of 5 stars

Nice tool. Would be nicer if you could add a comparison between folder/s (or global bookmarks, wherever they are) for bookmarks and which to keep/delete.*

So, it works on a very simple level, most enough for not power users.

*I handle about 1k bookmarks, so, to be honest, there is no handling anymore.

This review is for a previous version of the add-on (1.2.1-signed).