It seems to work great but then I started looking more closely at some of the URLS that were flagged as broken and several of them are fine. At first there was a problem with sites being flagged that pop up the secure site warning and ask for permission to access the http site, so I enabled, "Don't enable HTTPS only mode" in the Firefox settings. However, now I still get perfectly fine links in the list. I noticed some of them have the pop up to accept or edit cookies so does this add-on falsely report sites with this as broken? This add-on is not much good if you still have to manually go through the list of "broken" links it finds to check if they are actually broken.

This extension worked amazingly well on my device, and with about 20 minutes of work, I was able to review and clean up over 350 bookmarks! Over the years, my saved copies had somehow duplicated, and that's just the dupe cleanup. I cleaned up even more broken links, too. Highly recommend this extension, and will use it again in the future!

It's slow down so much it makes frozen the app. It's waited for10 minutes without any response. It's just about 16000 -24000 bookmarks to process, certainly from several bookmarks from different times.
Interesting fact is the same addon from the same author works perfectly!!! ..in chrome based browsers(time to response fast to not:chrome,brave,vivaldi).

works pretty fine for me

if a webpage has Cloudflare spam/fraud detector, this extension says the website is broken. is there a way to fix it?

Simple mais suffisamment complet

Отличное расширение. Очень простое.

Excellent extension, very helpful for work!

very good, easy to use.

Great, it did what it said it does.

It works if you know how to read :P

It works.

The only thing I learned about this add-on is that it lives up to its name. (itwillnotbeeasy) Installed, adjusted settings, and nothing. No start, go, launch, proceed, remove, engage, button to do anything. Uninstalled, reinstalled, used defaults, still nothing. No way to make it work. PLEASE HELP

Works well, but a search functionality would be great for those who have thousands of duplicates, like me :(

Fantastic Extension and Exactly what I needed!

Does what it says pretty well. Strange choice to not include a 'Select all' for the duplicate finder, but you do for broken URLs. I get you want us to keep one item remaining, but what if I don't want any of them to remain? As someone who needed to manage close to 5000 bookmarks, this did well enough.

(Updated) Seems to work well. Rather difficult to find how to run it though. Perhaps the dev could add the instructions to the 'Description' or 'About this extension'?

Installed, adjusted settings, and nothing. No start, go, launch, proceed, remove, engage, button to do anything. Uninstalled, reinstalled, used defaults, still nothing. No way to make it work.