The Firefox browser now has a built-in page translator that works even without the Internet::Mozilla has announced the release of an update to its Firefox browser. In version number 118, users will find a significant innovation - a built-in translator
Wow, I never knew that they had a Japanese to Romaji extension. Would furigana extensions work? https://addons.mozilla.org/en-US/firefox/addon/furiganaize/?utm_source=addons.mozilla.org&utm_medium=referral&utm_content=search
Yeah, furiganaize has an option to display as romaji. https://files.catbox.moe/ocjic8.png
Unfortunately it only works on Kanji (which is probably the hardest part, I guess if there's no alternative for kana there isn't enough demand?), but thanks!