rikaikun

rikaikun shows the reading and English definition of Japanese words when you hover over Japanese text in the browser.

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rikaikun is a powerful Chrome extension that helps you effortlessly look up Japanese words and kanji by simply hovering over text in your browser. Designed for both learners and native speakers, rikaikun provides instant readings and English definitions without interrupting your reading flow.

Key features include toggling between word, name, and kanji dictionaries using shift or enter keys, text-to-speech functionality to hear pronunciations aloud, the ability to copy words and definitions to your clipboard for flashcard creation, and customization options for the popup dictionary's appearance and content. Activate rikaikun by clicking the 理 icon in your browser, then hover over any Japanese text to see instant translations with convenient hotkeys to control display options.

Whether you're studying Japanese or need quick translations, rikaikun offers an intuitive and efficient way to understand Japanese text on the web.

By:: Erek Speed
Users:: 200,000+
Rating:: 4.66
(1,858)
Version:: 3.1.17 (Last updated: 2025-04-21)
Creation date:: 2019-09-23
Risk:: Moderate risk impact Very low risk likelihood
Permissions:: clipboardWrite
storage
offscreen
Size:: 29.14M
Email:: me*****@gmail.com
Full description:: See detailed description
Source:: Chrome Web Store
Updated:: a day ago

Ranking

# 1,121 ▲ 30

Other rankings

#21 in Education

#21 in changelog keyword 18 ▼ 1

#23 in press keyword 20 ▲ 1

#36 in dictionary keyword 52 ▲ 5

#64 in hover keyword 25

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Other platforms

rikaikun (v2.2.3)

10,172+ 4.80

(13)

User reviews

Pros

Very useful and indispensable for learning Japanese
Provides instant lookups with readings and definitions by hovering over kanji
Easy to use and intuitive interface
Useful from beginner to advanced (N1) Japanese learners
Customizable features such as text-to-speech and display options

Cons

Stops working intermittently for some users, with popups or meanings not appearing
Does not work on some websites that block JavaScript, such as ChatGPT or Wikipedia
English translation sometimes does not show up or only partial translations of phrases appear
Limited language support for translations, mainly English without other language options like Turkish

Recent reviews

Simplesmente indispensável, é o melhor do gênero, sem dúvidas!

Tiago Tamark, 2025-04-14

Excellent. The only issue is that is works so well most of the time that you sometimes get lazy and use it before you've even attempted to read the sentence. Functionally it sometimes translates a part of a phrase or conjugation, instead of the whole thing. Though I imagine that's hard to avoid with a complex language like Japanese.

Nathan f, 2025-04-09

Why English translation is not shown in my Chrome browser? Could you please help me? Thank you in advance..

Additives Polymate, 2025-01-21

View all user reviews

Extension safety

Risk impact

rikaikun requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.
High ****** ******* *** ********* ********* ******** ***** *** ** ********** ****** * ******** ******* *****

Risk likelihood

rikaikun has earned a good reputation and can be trusted.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
Medium **** ********* *** ****** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* ** * ******** ********* ** ****** *** *****
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