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rikaikun icon

rikaikun

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

Users200KCurrent public install base
Rating4.7Store average score
Reviews1,865Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview

rikaikun Media preview

5 assets
Trend

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User Growth Over Time

200K200K200K200K200K2026年7月12日2026年7月15日2026年7月18日Latest: 200K
Rating trend

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7-day rating change

Start
4.66
Latest
4.66
7-day rating change
0.00
4.564.614.664.714.762026年7月12日2026年7月15日2026年7月18日Latest: 4.66
2026年7月12日2026年7月18日
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Technical snapshot

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Version3.2.26
ManifestV3
Size28.11MiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

Review the store description, core capabilities, and common use cases.

As a Japanese dictionary, rikaikun helps you look up the only the words you don't know without losing your place. It's also useful for Japanese speakers wanting to know how to say Japanese phrases in English.

Features:

* Using shift or enter, switch between word, names, and Kanji dictionaries.

* Enable text to speech in the options to hear Japanese words you look up spoken out load.

* Press 'c' to copy the current word and definitions to the clipboard for making flash cards.

* Customize how the pop up dictionary looks and what content it shows.

Reviews

Recent review snapshot

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Store average score4.7Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.4Average computed only from synced review bodies below
Reviews with text566Synced review bodies
Total ratings / reviews1,865Chrome Web Store public rating/review count

Store average score: 4.7. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.

5
387
4
90
3
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25
fariz ml2026年5月17日
5

very very useful for japanese studying

Version 3.2.30Language en
李通2026年4月17日
5

This is the very first extension that I ever rated as 5 stars. Still, is it possible to read the chosen part in JP, plz?

Version 3.2.28Language en
Phoebe Pidgeon2026年3月12日
5

This extension is very useful! Some kanji are easy to forget and hard to read, and this extension is very helpful for that. If you're learning Japanese, it's super useful!! :D

Version 3.2.25Language en
Edward N2026年1月26日
4

Extremely handy however it doesn't work for a lot of text that has selection disabled. Alt-selecting that text can sometimes make it detect it, however it would be nice if it could detect you hovering over say buttons or elements with user-select: none applied to them.

Version 3.2.18Language en
Mike Edson2026年1月8日
2

It stops working after a while, unfortunately.

Version 3.2.16Language en
H2025年11月11日
5

Been using it forever, it just works and I love it.

Version 3.2.9Language en
1 helpful · 0 not helpful
Nyanpeko2025年9月26日
5

Helps me learn Japanese kanji at blazing speeds!

Version 3.2.8Language en
1 helpful · 0 not helpful
Alpha O Mega2025年8月17日
5

My favourite widget for learning Japanese. With Google's PDF Viewer in Chrome, I can even use it on PDFs from Tadoku and other sources. 本当有り難い!

Version 3.2.3Language ja
1 helpful · 0 not helpful
Master Spark2025年8月10日
5

It's really good, but is there a way to remove unwanted words from the dictionary? I want to remove the definitions that appear over all the Greek letters, because it's annoying that they come up whenever I hover my mouse over any Greek text

Version 3.2.2Language en
1 helpful · 0 not helpful
Arpit Aeron2025年7月23日
1

It only shows meaning for characters that you hover over which sometimes are meaningless as they form part of a complete word. I was expecting it to use as an extension to translate a selected word or phrase.

Version 3.2.0Language en
2 helpful · 2 not helpful