Can you type romaji to look up Japanese words in a browser extension?
YuzuLingo · Nov 1, 2026
Yes. A browser dictionary extension can convert romaji to hiragana as you type, then look up the result in the same dictionaries used for hover lookup. You do not need a Japanese keyboard or IME installed to search.
How romaji conversion works
The extension detects that your input is Latin characters and that Japanese is one of your learning languages. It runs the romaji through a converter—usually wanakana or a similar library—to produce hiragana. That hiragana then enters the normal dictionary cascade: expression match, reading match, deinflection.
Why this matters for learners
Beginners often know what a word sounds like but cannot type it in kana. Switching to a Japanese keyboard mid-sentence breaks flow. Romaji input lets you confirm a word's meaning, pitch, or kanji without leaving your current keyboard layout.
Conjugated forms still match
Deinflection runs on the converted hiragana. Typing tabetai converts to たべたい, which deinflects to 食べる. The dictionary shows the base verb with its conjugation path. This is the same logic used when hovering over conjugated words in video subtitles or page text.
Katakana and mixed input
Katakana words convert the same way. Type konpyuutaa and the lookup tries コンピューター. If your input already contains kana, the extension uses that directly and only converts the Latin portions. Kanji pasted into the search box skip conversion entirely.
Where this works
The search popup, page-scan hover, and context-menu lookup all support romaji input when Japanese is enabled. Press the search hotkey, type romaji, and results appear as you type—no separate conversion step required.
