Greasy Fork is available in English.
(WIP) Translate texts in images on Pixiv, Twitter, Misskey, Calckey
< Feedback on Cotrans Manga/Image Translator (Regular Edition)
Sorry for the late response. I added support for i18n just now. Update to 0.3, change the Pixiv language to English if you haven't, then buttons and the result image should be in English. Tho' there are still some issues with vertical texts, sorry for that.
how to translate japanese text to english text