rikaikun icon

rikaikun

by Erek Speed · Education
FeaturedManifest V3 Free
View in Chrome Web Store Data as of 15 Oct 2026

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

Users
200K
0 in 30 days
Rating
4.6 / 5
−0.09 in 30 days
Ratings
1,867
+1 in 30 days
Store rank
#1,133
#1,028 among extensions
Version
3.2.42
updated 30 Sep 2026

Users

monthly, 3 years
60K130K200KAug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 200,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years
6001,2341,867Aug 2023Apr 2025Oct 2026
Latest, 15 Oct 2026: 1,867 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About rikaikun

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. Activate the extension by clicking the 理 icon in the top right. When the introductory pop up appears, rikaikun is ready for action. When it's activated, when you hover over Japanese words they'll be translated in a pop up. If you hit shift/enter, you'll see some information about the first Kanji. Press 'd' to hide the English definitions; press it again to bring them back. (Also changeable on the Options page.) Changelog: https://github.com/melink14/rikaikun/blob/main/CHANGELOG.md

Growth

WindowUsersChangeRatingsRating
7 days0+0.0%+1−0.09
30 days0+0.0%+1−0.09
6 months0+0.0%+4−0.09
1 year0+0.0%+6−0.09

Chrome Web Store search rankings

Where rikaikun appears when people search the store, with the 30 day change
Search phrasePosition30 days
changelog#24+13
press#32+19
dictionary#80+2

Version history

246 versions recorded
3.2.4230 Sep 2026
3.2.4123 Sep 2026
3.2.401 Sep 2026
3.2.3917 Aug 2026
3.2.3811 Aug 2026
3.2.374 Aug 2026
3.2.3628 Jul 2026
3.2.3521 Jul 2026

Details

Category
Education
First seen
23 Sep 2019
Size
28.4 MB
Languages
en
Pricing
Free
Support
github.com
Extension ID
jipdnfibhldikgcjhfnomkfpcebammhp

Permissions and risk

Minimal riskimpact 2, likelihood 0
Permissions
clipboardWritestorageoffscreen

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