Powerful and versatile pop-up dictionary for language learning used by 60,000+ language learners.
- By:
- Darius Jahandarie
- Daily users:
- 17,106+ 185
- Rating:
- 4.92 (64)
2 new ratings
- Version:
- 25.4.28.0 Last updated: 2025-05-07
- Version code:
- 5943067
- Creation date:
- 2023-12-08
- Risk:
- High risk impact Moderate risk likelihood
- Permissions:
- storage
- clipboardWrite
- unlimitedStorage
- declarativeNetRequest
- scripting
- contextMenus
- storage
- Host permissions:
- <all_urls>
- <all_urls>
- Size:
- 15.31M
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Updated:
- a day ago
User reviews
Pros
- Highly effective English and Japanese dictionary functionality, outperforming other extensions.
- Strong development and user support community keeping the project active.
- Helpful in learning Japanese and enhances language comprehension, especially when combined with complementary tools.
- New features like scanning words on Google Docs are highly appreciated and considered lifesavers.
- General positive user sentiment, with many stating it is the best addon they have used.
Cons
- Difficulty installing dictionaries mentioned by multiple users causing frustration.
- Some bugs or inaccuracies in word scanning, especially with certain Japanese characters and compound words.
- Issues related to workspace or container settings impacting functionality in certain browsers like Zen browser.
Recent reviews
by Firefox user 18177036, 2025-05-13
by Firefox user 15067341, 2025-05-12
by Hiyo, 2025-05-08
Extension safety
Risk impact
Yomitan 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
Yomitan is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
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 **** ********* *** **** **** *******
Upgrade to see full risk analysis details
Compare add-ons
- Compare Yomitan vs Yomichan
- Compare Yomitan vs Chinese Popup Dictionary
- Compare Yomitan vs WordBook-Vinyan
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