Greasy Fork is available in English.
Modified/Forked from "Ellililunch AO3 Bookmark Maker" (http://greasyfork.icu/en/scripts/458631). Script is out-of-the-box setup to automatically add title, author, status, summary, and last read date to the description in an "collapsible" section so as to not clutter the bookmark.
I LOVE THIS SCRIPT SO MUCH I DOWNLOADED FIREFOX AND TAMPERMONKEY FOR IT