This add-on is not compatible with your version of Firefox. Rated 5 out of 5 stars

Kindly update this addon. I have got more than 10K bookmarks and many have been duplicated by another *sync addon.

FF Developer Edition 56.0b2 (64-bit)
This add-on is not compatible with your version of Firefox.

Vorsicht: Nach 3 Fehltreffern deinstalliert. Rated 1 out of 5 stars

Vorsicht - liefert Treffer die nicht passen.

not that good Rated 1 out of 5 stars

bookmark deduplicator is better alternative

This user has a previous review of this add-on.

Works pretty well Rated 3 out of 5 stars

Delete key doesn't work but can use Alt+D. Have to access the addon by going to Tools → Bookmarks Duplicate Cleaner → Find duplicates. Menu bar is hidden for many people in firefox (this addon was developed in 2013) so you have to go to the 3 bars on the top right, customise, bottom left: show hide menus. After that it works ok, sadly no ability to sort by folders which would enable users to delete everything from duped folders.

limited but works much better than the alternatives Rated 4 out of 5 stars

This is far better than Bookmark Deduplicator which has a single feature - RemoveAll, without any control over what's being deleted or where.
This addon is better because shows the folder location of the duplicates, and it lets you choose WHICH duplicate to delete. It's true that it doesn't have the remove all, but that's useless anyway.
A minor suggestion would be to allow to use the DEL key on the keyboard instead of using the mouse to press the delete button. Also, deleting folders would be nice.
The addon has not been updated since 2013. I hope the author resumes work.

Perfect Rated 5 out of 5 stars

Features are minimal to none, however it does exactly what it says it does.

+++++ Rated 5 out of 5 stars

Сырное, нажми Alt, зайди Инструменты, Bookmark Duplicate Cleaner или просто в меню закладок (ツ) справа от звездочки

Rated 1 out of 5 stars

Не нашел даже как его запустить ¯\_(ツ)_/¯

e10s ? Rated 5 out of 5 stars

It seems it doesn't support e10s but since e10s is disabled on my profile, I couldn't say if it still properly works despite that.

I hope it will be compliant with future firefox release. I love it. Do you plan to update it?

WORKS PERFECT > 1 @ A TIME Rated 5 out of 5 stars

Sure 1 @ a time's not fast but its NOT that bad really. Goes pretty fast!! Gets the job done PERFECT. No probs at all. Love it.

rediculous Rated 1 out of 5 stars

the problem expressed by many is like mine. firefox's sync feature creating duplicate bookmarks on every devise over an over until you end with something north of 10000 bookmarks. And the only way i know to stop it is to turn off the synce feature.

Once the damage is done the question is how to fix it without loosing wanted bookmarks, some of which transferred from mozaic to Netscape navigator to Mozilla Firefox to today. That covers abuot 23 years of internet use in my case.

You bookmark file can be a rough outline of you life and mine has been the victim of back sync features, changes in the way they functions without warning uses of the possible disastrous outcome. I have to assume Firefoxs know of these problems is just telling users "sorry about your luck". and this add on doesn't address or even acknowledge the bigger problem. I suppose if you you had 100 book marks and wanted to find dupes this might be practice. But that is not the case for most people looking at this as any practical solution.

An amazing program Rated 5 out of 5 stars

Quick and easy. Make sure you read the instructions online. though.
For Windows10 users - I have a 14" monitor and with the new and awful UI, I had to move the taskbar in order to reach the delete key.
Thank you for a great and efficient little program.

Does what it says on the tin Rated 5 out of 5 stars

Simple, working, open source. What you need more?
I disagree with Wilbert van Bakel. I had 278 duplicates and I was able to delete them simply.

2317 duplicates found Rated 1 out of 5 stars

The only option seems to delete them one by one...

A toolbar button would be nice! Rated 4 out of 5 stars

I have my title bar and menu bar hidden. I don't ever like having to use the menu bar at all, but for this addon I need to in order to run your addon to check for duplicates.

Can you please add a toolbar button for this? I am not a big fan of using keybinds/shortcuts either but a toolbar button would be perfect.

Having options/choices are great, no?

=)

Horribly misleading! Rated 1 out of 5 stars

Every time I replace or add my list of bookmarks, they are duplicated, NOT over written. Hence, I now have over 10,000 bookmarks. Hence my bookmarks take longer to load. I have made MANY attempts (do understand how time consuming it would be to delete each individually) to solve this problem. NONE have resulted in anything near to being satisfactory and I have had no choice but to live with 10,000 plus bookmarks that take a long time to load. I would certainly hope the the developers would come up with a method of simply overwriting or completely replacing bookmarks instead of just adding on. The Duplicate finder fins duplicates alright, but it does NOT eliminate them properly! I attempted to MANUALLY delete many but I end up with the same number of folders with ZERO content! I am a USER, not a developer. I just need solutions that work. Sorry this duplicate cleaner simply does NOT do the job.

Boa Extensão Rated 5 out of 5 stars

Gostei dessa extensão porque parece ser a única que mostra o caminho do favorito. Todas as outras que testei não fazem isso.

This user has a previous review of this add-on.

Clean 6,095 Bookmark Duplicates . . . ONE AT A TIME?? Rated 1 out of 5 stars

I don't think so. After searching for hours on this issue I finally located an Addon that works: BOOKMARKS CHECKER.

Не могу использовать Rated 1 out of 5 stars

Как оно вообще должно работать? Установилось и куда нажимать что бы оно работало? Ни кнопок ни контекстного меню ничего нет как взаимодействовать с дополнением?

How it all should work ? Install and where to click that would it work ? No buttons or the context menu is nothing how to interact with the addition ?

Rated 4 out of 5 stars

As others have noted, Bookmark Duplicate Cleaner matches duplicate *links* and one can choose which folders to delete them from. CTRL+click or SHIFT+click to select multiple folders to delete from, and ALT+D to delete.

It seems to be the best option available.

However, I wish that it was faster to use with a keyboard. Currently I have to:
1.) Hit the down arrow twice and the up arrow once to highlight a duplicate title on the left.
2.) Tab over to the Bookmarks (location) window on the right.
3.) Hit the down arrow once to highlight one of them, and optionally SHIFT+down arrow if there are additional ones to select.
4.) Press ALT+D to delete.
5.) Goto 1.

Ideally, a bookmark would be pre-highlighted, so one would only need to hit the delete key to delete a duplicate, and it would automatically advance to the next duplicate title. If there were more than one duplicate, one would simply hit the delete key several times, or shift-down arrow to select several and then hit delete.