Greasy Fork is available in English.
Change the font, size, width and background of a work + blacklist: hide works that contain certain tags or text, have too many tags/fandoms/relationships/chapters/words and other options + fullscreen reading mode + bookmarks: save the position where you stopped reading a fic + number of words for each chapter and estimated reading time
< 脚本 AO3: Fic's Style, Blacklist, Bookmarks 的反馈
The blacklist checks the exact text of the tag. If you want to block all tags containing the word 'smut', you need to write *smut*
There's more information how to use wilcards in the script's decription here on greasyfork.
The script works great! The only problem I encountered is that blacklisting a tag still shows its subtags, ex. blacklisting "smut" still bringing "fluff and smut"