One and only real extension that does that job. Does it perfectly well. Does it in ALL folders and ALL sub-folders. And on top of all that, does it automatically.
Damn @*$%ing cool.

Thanks for developing and sharing that lovely piece of code.

excluding folders doesn't work

very nice! I love it! I set it " Data Added" & Reverse Order

I uninstalled it because it didn't work as I expected. To restore bookmarks, I used Firefox's Bookmark Manager : Fine. Is it possible to sort only one folder ? how ?

Worked best with what it describes. However, after making it auto-sort my bookmarks recursively, I found that my browser became extremely unstable and prone to crashing.

This ad on worked brilliantly for couple of years, but this last month, I have noticed is not sorting some files. I create a new all encompassing every year where then I create folders that are named: a-b-c; d-e-f-g; h-i-j-k and so forth. In the past, it has sorted them out immediately. Now, however, it pushes d-e-f-g before a-b-c. I double checked to make sure there were no spaces before or after each series of letters... I just cannot understand why this is happening. I have over 10.000 bookmarks, and it is fundamental for me they get sorted out alphabetically for easy retrieval, no matter whether it takes 10 seconds or 1 full minute. But as expressed, it worked brilliantly before.

Funktioniert einwandfrei nachdem man alles richtig eingestellt hat.

As some people point out, exclusion of folders does not work, please fix it! Otherwise, it's a very good tool!

As long as you are careful to select the correct folders and save your options after changing any settings, I have not had any issues with this addon. Works great, even the auto-sort feature. I currently have it set to arrange bookmarks in certain folders to automatically sort the most recently visited pages to the top of their folder list. Does exactly that.

This extension works roughly well. However, I do not recommend using auto-sorting if you want to sort only bookmarks in some folders, because every time I changed the settings, the target folder settings were reset. For now, I check the folder settings and perform the sorting manually.

God bless you. Very good addon. Храни тебя Господь. Расширение просто сказка. Отсортировал все.

This almost works for what I wanted, but then fails in the end.

While nice that everything was sorted as promised the second option mentioned in the addon description was the one that made me install it.
As in, I'm someone with a lot of bookmarks from stuff I am reading it is common to have duplicate bookmarks with only the chapter number differing. I could sort by titles to fix this, but I like the bookmarks sorted by date to know which are the oldest. This addon in theory would allow me to sort by date, and then if two similar bookmarks found they would be paired. But this is not the case. The second sorting option has no effect no matter which option is chosen.

Working quite well here with 20,052 bookmarks (no, that's not a typo). It takes a little while to sort (under 30 seconds), but has generally functioned as expected.

In the past, there have been conflicts with Firefox Sync and manually sorting, but I think the new bookmark sync backend (Mozilla bugzilla #1587357) has addressed that since Firefox 70.

Works quite well, and Eric gave quick support. Excellent!