Yomitan

Name: Yomitan
Rating: 4.8431 (102 reviews)
Author: Darius Jahandarie

By: Darius Jahandarie

Powerful and versatile pop-up dictionary for language learning used by 100,000+ language learners.

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Features & Capabilities

Yomitan is a powerful, privacy-conscious pop-up dictionary built for language learners. Used by over 100,000 learners, it deciphers texts in 20+ languages and offers an interactive popup, a dedicated search page, support for thousands of dictionaries (including slang and kanji), and native pronunciation from multiple sources. It works fully offline and is completely free and open-source.

Advanced features include native audio playback with custom sources, automatic Anki flashcard creation via AnkiConnect, configurable data transmission for privacy, and the ability to add recommended or custom dictionary sources. Yomitan is ideal for learners who want quick in-context lookups, seamless flashcard workflows, and a flexible, offline-capable tool that respects user privacy.

User Growth & Download Statistics

Add-on Education Open Source Privacy & Security

By:

Daily users:

Rating:

Version:

26.5.19.0 Last updated: 2026-05-28

Version code:

6279292

Creation date:

2023-12-08

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

Size:

15.10MB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-14

Compare stats and ranking:

Ranking

# 365

Other rankings

#5 in Language Support ▲ 1

#25 in Appearance

#1 in tank keyword 5

#3 in flashcards keyword 19

#6 in power keyword 36 ▼ 2

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For Developers

Monetize with App Pass Boost with Extension Booster

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:

Darius Jahandarie

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/yomitan/

Website:

https://yomitan.wiki/

Permission Change History

2024-06-21: Version 24.6.10.0 → 24.6.17.0

Add Permissions: contextMenus

User Reviews

Users generally praise Yomitan — many call it an excellent, well‑maintained add‑on that works very well as an English dictionary. The main repeated problem is difficulty installing dictionaries, including browser/workspace/container-related issues that can block installation.

Pros

Strong positive reception — many users call it a great or excellent add‑on
Effective as a generic English dictionary and better than other extensions
Actively maintained with a visible development team (users willing to donate/support)

Cons

Difficulty installing dictionaries (several users report they couldn't install dictionaries)
Installation can be affected by browser workspace/container settings (reported workaround needed for some browsers)

Recent reviews

by Re*****, 2026-06-08

by Fi*****, 2026-05-21

by gr*****, 2026-05-16

View all user reviews ›

Is Yomitan 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.

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.
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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.

Yomitan 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.
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