Greasy Fork is available in English.
Shows all pages at once in online view for these sites: Asura Scans, Batoto, BilibiliComics, Comick, Dynasty-Scans, Flame Comics, Ikigai Mangas - EltaNews, Ikigai Mangas - Ajaco, KuManga, LHTranslation, Local Files, MangaBuddy, MangaDemon, MangaDex, MangaFox, MangaHere, Mangago, MangaHub, MangaKakalot, MangaNelo, MangaNato, MangaOni, Mangareader, MangaToons, ManhwaWeb, MangaGeko.com, MangaGeko.cc, ReadComicsOnline, ReaperScans, TuMangaOnline, WebNovel, WebToons, WeebCentral, Vortex Scans, ZeroSc
I like this script a lot, it is maintained well and supports many sites (even some niche ones). I hope you continue to improve the script!