MOJi 辞書 Chrome Extension
A Japanese dictionary plugin that auto-detects kana, kanji, or romaji for instant lookup.
At a glance
Starts at
Free
No paid plan found on the Chrome Web Store, September 2026.
Free tier
Yes
Platforms
Chrome
Best for
Japanese learners looking up words while browsing
Not for
Learners of languages other than Japanese
3.6 out of 5
Scored by a Toolio reviewer after real useOur verdict
MOJi Dictionary recognizes whatever you type or highlight - kana, Chinese characters, romaji, or a full phrase - and instantly looks it up across more than a million detailed entries. It layers in searches from several other Japanese dictionary sites and lets you organize found words into your own vocabulary bank. It also offers one-click translation for Japanese news articles, though it's rated 3.6 out of 5 from 36 reviews, a middling score for a well-established tool.
✓What it does well
Multi-format recognitionIt recognizes kana, kanji, romaji, or conjugated phrases automatically.
Cross-dictionary searchIt pulls results from several authoritative Japanese dictionary sites at once.
Personal vocabulary bankYou can save and organize looked-up words into your own collection.
✕Where it falls short
Japanese onlyIt's built specifically for Japanese, not other languages.
Middling ratingsIt holds 3.6 out of 5 from 36 reviews, not a standout score.
Chrome onlyIt's limited to Chrome, with no listed version for other browsers.
Key features
Instant word lookupIt looks up whatever Japanese text you type or select.
Combined dictionary searchIt searches multiple authoritative Japanese dictionary sites in one place.
Vocabulary managementIt lets you save and categorize words into a personal word bank.
News translationIt offers one-click translation for Japanese news content.