Indeed it is lacking a feature to remove all bookmarks. What I did is open the dev console and ran this script a couple of times:

// select all duplicateCards
let duplicateCards = document.querySelectorAll('.duplicate');
// click the checkboxes leaving one out, 500 at a time to avoid timing out (I had a lot of duplicates)
for (let i=0; i<500; i++) {
let boxes = duplicateCards[i].querySelectorAll('.custom-checkbox input');
for (let j=1; j boxes[j].click();
}
}
// manually click the `remove all selected` button
// repeat :-p

nicht nur die suche sondern auch das entfernen ändern ist effizient möglich

Very usefull one. And good use of boostrap 👍

Work extremely well for removing bookmarks with broken links. Great addon. Can quickly remove dead links, empty folders and duplicate bookmarks

I love this, and want to make a feature request, please add a progress bar, I can't tell whether it is working or not.

Works great

Из подобных расширений по работе с закладками это для меня оказалось лучшим. Корректная работа, ошибок практически нет

Nice and clean user interface, one extension that save time and do exactly what is intended to do ! Many thanks author.

The best

Simple and easy way to clean up the bookmarks. Find and clean duplicates, merge cuplicated folders and manage broken links is easy to do wiht this extension.

Super. Macht genau, was man erwartet. :-)

Super easy to use.
Worked great.

It would be nice to see the title, or where in my bookmarks the offending bookmark is located, for future improvement.