Zenbu Browser Extension icon

Zenbu Browser Extension

by SERP · Tools
Manifest V3 in_app
View in Chrome Web Store Data as of 21 Oct 2026

Learn Japanese with Japanese-English video subtitles, instant dictionary translations, furigana, and romaji.

Users
22
+10 in 30 days
Rating
5.0 / 5
+5.00 in 30 days
Ratings
1
+1 in 30 days
Store rank
#149K
#124K among extensions
Version
1.1.0
updated 14 Aug 2026

Users

monthly, 2 months
01122Aug 2026Oct 2026Oct 2026
Latest, 21 Oct 2026: 22 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 months
001Aug 2026Oct 2026Oct 2026
Latest, 21 Oct 2026: 1 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 Zenbu Browser Extension

Learn Japanese with Japanese-English video subtitles, instant dictionary translations, furigana, and vocabulary tools. --- **Zenbu Browser Extension turns videos and websites into immersive Japanese reading and listening practice. Read along with dual subtitles, translate words instantly, and save vocabulary without leaving the page.** Whether you're watching anime on Netflix, following a YouTube channel, or reading a news article, Zenbu Browser Extension removes the friction of looking things up so you can stay immersed and keep learning. ### 📺 Dual subtitles on YouTube & Netflix - See Japanese and English subtitles together, at the same time - Click any word in the subtitle to look it up instantly — the video keeps playing - A clear message appears when no Japanese subtitles are available, so you're never left guessing ### ⚡ Instant click-to-lookup, anywhere - Click a Japanese word on **any website** and get the meaning immediately - Powered by **Jitendex**, a rich, high-quality Japanese-English dictionary - No copy-pasting, no switching tabs, no breaking your flow ### 🔤 Read with confidence - **Furigana** over kanji so you always know the reading - Optional **romaji** for beginners - **Pitch-accent** markers to help your pronunciation sound natural - Built-in **audio playback** to hear words pronounced ### 🖼️ Read Japanese inside images - Run local OCR on a page image or the current video frame - Click parsed Japanese words underlined directly on the original image - Read, select, and copy the same recognized Japanese in the Zenbu sidebar - Toggle furigana or compact definitions beneath each parsed OCR word - Optionally translate one recognized region or a selected span into natural English - Natural Translate is an online action and sends only the selected OCR text to MyMemory ### 🌐 Translate a whole idea - Select a complete Japanese sentence or passage on a website - Click **Natural Translate** in the top bar to see natural English in the sidebar - Keep individual underlined words reserved for fast dictionary lookup - Nothing is sent for translation until you explicitly click the action ### 💾 Save words & export to Anki - Save any word — along with the sentence it appeared in — into your own decks - One-click jump back to the exact moment in a video where you saved a word - **Export your decks as TSV** to import straight into Anki for spaced-repetition review ### 🔒 Private & offline-friendly - The dictionary is downloaded and stored locally on your device - Images, OCR, dictionary lookups, and saved vocabulary stay on your device - Online translation happens only after you explicitly select a Natural Translate action ### 🌐 Works where you already are - **YouTube** — dual subtitles + clickable words - **Netflix** — dual subtitles + clickable words - **Any website** — click-to-lookup, furigana annotation, selection translation, sidebar tools, and image OCR --- **Stop pausing to type words into a dictionary. With Zenbu Browser Extension, looking up Japanese is as fast as a click—so you can spend your time learning, not searching.**

Growth

WindowUsersChangeRatingsRating
7 days+4+22.2%00.00
30 days+10+83.3%+1+5.00

Version history

2 versions recorded
1.1.014 Aug 2026
1.0.013 Aug 2026

Details

Category
Tools
First seen
13 Aug 2026
Size
28.4 MB
Languages
en
Pricing
in_app
Privacy policy
serp.co
Support
help.serp.store
Extension ID
kaalpflpefadijdemimciikalgpgjmok

Permissions and risk

Elevated riskimpact 3, likelihood 3
Permissions
storageunlimitedStoragedeclarativeNetRequestsidePanel
Site access
<all_urls>https://api.mymemory.translated.net/*https://cdn.jsdelivr.net/npm/kuromoji@0.1.2/dict/*https://github.com/*https://objects.githubusercontent.com/*https://release-assets.githubusercontent.com/*
Can read and change data on every website you visit.

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