Rikaitan Firefox

Rikaitan

Powerful and versatile pop-up dictionary for language learning. Used by 100,000+ AJATTers and language learners.
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Features & Capabilities

Rikaitan is a powerful Chrome extension designed to enhance your Japanese language learning experience. Similar to tools like 10ten Japanese Reader and Rikaikun, Rikaitan offers more than just dictionary lookups — it functions as a comprehensive study aid. With seamless integration of Anki and support for creating flashcards, Rikaitan helps you efficiently memorize and practice vocabulary directly from your browser.

Installing Rikaitan transforms your browser into an interactive platform to better understand and cultivate your Japanese proficiency. To make the most of its features, users are encouraged to read the detailed manual. Whether you are a beginner or advanced learner, Rikaitan provides the tools necessary to navigate challenging Japanese texts and reinforce your learning through active recall methods.

User Growth & Download Statistics

Manifest V3 Add-on
By:
Ren Tatsumoto
Daily users:
936
Rating:
3.40
(5)
Version:
25.9.16.0 Last updated: 2025-09-30
Version code:
6044699
Creation date:
2023-03-11
Risk:
High risk impact High risk likelihood
Permissions:
Host permissions:
  • <all_urls>
Content scripts matches:
  • *
Size:
15.03MB
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2025-10-19
Compare stats and ranking:

Other platforms

Chrome
Rikaitan Popup Dictionary (v26.5.19.0)
1,000 3.67 (6)

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Ren Tatsumoto
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/rikaitan/
Website:
https://tatsumoto.neocities.org/

Permission Change History

2024-06-22: Version 24.6.10.0 → 24.6.17.0
Add Permissions: contextMenus
2023-12-11: Version 23.9.25.1 → 23.12.12.2
Add Host permissions: <all_urls>
Add Permissions: declarativeNetRequest scripting
Remove Permissions: <all_urls> webRequest webRequestBlocking nativeMessaging
Add Optional permissions: nativeMessaging
Remove Optional permissions: webNavigation
2023-03-21: Version 22.10.23.2 → 23.3.21.0
Remove Host permissions: <all_urls>
Add Permissions: <all_urls> webRequestBlocking
Remove Permissions: declarativeNetRequest scripting
Add Optional permissions: webNavigation

User Reviews

by de*****, 2025-06-05
by Fi*****, 2025-05-13
importing new dictionaries and deleting them is VERY slow. For Japanese 10ten (RikaiChamp) is already much better. The only reason to use this one is for other languages and sadly the dictionary inclusion is so so slow that it just soured my experience.
by Ra*****, 2025-01-10
View all user reviews ›

Is Rikaitan Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Rikaitan requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
  • High ****** ******* *** ********* ********* ******** ***** *** ** ********** ****** * ******** ******* *****
  • Low ****** ***** ** ******* ****** ********** **** ** ** ******** ******* ** **** ***** *************
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Rikaitan may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.

Risk likelihood analysis details
  • Critical This extension is not longer available in the store
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