Greasy Fork is available in English.
Shows all pages at once in online view for these sites: Alandal, Asura Scans, Batoto, BilibiliComics, ComiCastle, Comick, Dynasty-Scans, INKR, InManga, KLManga, Leitor, LHTranslation, Local Files, LynxScans, MangaBuddy, MangaDemon, MangaDex, MangaFox, MangaHere, Mangago, MangaHosted, MangaHub, MangasIn, MangaKakalot, MangaNelo, MangaNato, MangaOni, MangaPark, Mangareader, MangaSee, Manga4life, MangaTigre, MangaToons, MangaTown, ManhuaScan, ManhwaWeb, MangaGeko.com, MangaGeko.cc, NaniScans, NineM
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!