Super, ce module, il fait exactement ce que j'attendais. Plusieurs choix sont possibles pour marquer automatiquement les doublons (Dups) ou alors à la main.

I am very impressed, and agree about everything good and useful noted in the previous posts. Thanks.

Unpretentious and practical. When it finds duplicates it asks which to select (newest or oldest entry).

Amazing extension!
Due to constant import/export from/to other browsers I had a total of 15k bookmarks.
This extension removed the dupes with a single click to 3k bookmarks within minutes.
Highly recommended.

Seems like there is a bug regarding capital vs non-capitalized folder names. After running the "Moved marked bookmarks to 'Dupes'" command, any of my folders with a non-capitalized name were left without any bookmarks in them. The non-capitalized folders were empty.



EDIT: User error, the plugin is working as intended!

Super! (and amazing that Firefox doesn't have this essential functionality buit-in!)

One star because it doesn't scan ALL your bookmarks (across different folders and subfolders). Even then, it's not detecting duplicate urls within the same folder (most of the time).

In other words, you can have duplicate urls across many different folders but it won't detect them because it can only scan one bookmark folder at a time. There's no option to scan all folders.

Just removed duplicate bookmarks using this add-on..
Thanks

Great nifty tool. Very fast and accurate.
Need to understand the options once we run the Bookmarks DUPES.
Options to mark the duplicates in many ways.
For a huge volume of bookmark duplicates use one of the intuitive 'marking' options.
(Example in each duplicate group, select all but latest).
We can also manually choose and remove but when faced with a huge volume better to leverage the tool.
It also creates a "Dupes' folder we can move (similar to Recycle Bin on a computer) before permanently removing or choose to directly remove. As the Add-on warns, once removed there is no way to get back. But that is how it works. (It is like when we empty recycle bin)

Awesome tool. Kudos to the creator (s)