I did not use expert mode, but I felt this add-on was easy to use and handled my problem (duplicate bookmarks) very quickly with no issue.

I have imported my Chrome bookmarks several times over the years and was dealing with several duplicate copies of my Chrome bookmarks with varying levels of additions in Firefox. I finally decided it was time to clean.

Bookmark Dupes allowed me with one click to find all of the dupes in my library. With a second click, I was able to select all but the newest bookmarks, and with a third click I was able to move them to a new folder called dupes. Then a quick check to make sure that everything was good and I deleted ~7000 bookmarks from my library.

I then ran the "empty folders" option. The only minor complaint was that I had to run the "empty folders" about five or six times. I'm assuming that if an empty folder is inside another folder it will not consider the parent folder empty, but it was pretty easy to to "empty folders" then "select all" then "delete" until 0 empty folders were reported so definitely not a major complaint.

Overall great and easy to use, took less than five minutes to install and clean out my bookmarks library.

Works well. If you just imported a large number of bookmarks (17,000 in my case), wait 5–10 minutes before searching. Similarly, after batch deleting bookmarks, give it another 5–10 minutes before closing the tab.

+ easy to use
+ self explanatory
+ does exactly what it is supposed to do
+ no weird stuff

as always: make backup before any changes. (export your bookmarks)

Works great, thanks!

Great!!!!

Works as expected. Nothing fancy and could use some polishing, BUT it is the only extension (for this purpose) that doesn't ask for more permissions than it should. It uses "read and modify bookmarks" and nothing else. As such, even though it is not perfect, it is the best choice, IMHO.

Simple UX and works well!

"Bookmark Dupes" does it's job __very well__, and the expert options are a very good addition.

May be the user interface could be improved.

But this nice plugin already saved me countless hours of work, removing thousands(!) of duplicates from a crufty, ancient collection of bookmarks, merged from several computers' FF installations, so ⭐⭐⭐⭐⭐ from me!

Thanks for the good work! Keep it up!

Thank you. So productive.

WOW! I was skeptical at first, as many others are. I've been disappointed with a lot of extensions not doing what they claimed they would, but this one is LEGIT! I've kept copying my bookmarks to my new computers and browsers for YEARS. I accumulated far too many, and there were literally thousands of duplicates. Bookmark Dupes *quickly* and *easily* cleaned them up for me with just a few clicks!! Amazing extension and FANTASTIC work from the developer to solve a problem that needed a practical solution! Bravo!

Perfect! Removed all the messed up stuff in seconds. Great tool. Thank you!

Reduced the backup size i half after deleting the bookmarks. Deleting empty folders acts bit weird, you have to search and delete multiple times to get rid of empty folders. Other than it worked perfect to remove duplicates.

After importing my bookmarks from another browser and finding that I've clobbered my bookmarks with duplicates and junk, this addon perfectly helped me fix the issue in 5 minutes or less. All the other addons regarding duplicate bookmarks were trash in comparison.