---
title: "Mooon: Japanese Webpage & Subtitle Reading Assistant – Chrome extension stats, history and permissions"
description: "4,000 users, rated 5.00 by 11 people. Version 1.4.1, updated 2026-11-02. Requests 9 permissions."
url: "https://extensiontracker.com/extension/fejbaoplibjdpbdlebomlhpncffgcchc"
---

# Mooon: Japanese Webpage & Subtitle Reading Assistant

Live in the Chrome Web Store.

- Users: 4,000
- Rating: 5.00 from 11 ratings
- Last checked: 2026-11-09 22:07 UTC
- Users gained in 7 days: No change
- Users gained in 30 days: +1,000 (+33.3%)
- Rank by users: #11,109 of 292,131 live extensions
- Rank in Education: #341 of 12,901

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Browser as textbooks. Furigana on kanji and foreign words, AI translation/explanation, wordbooks, note-taking, and more.

- Extension ID: `fejbaoplibjdpbdlebomlhpncffgcchc`
- Developer: [Mooon](https://extensiontracker.com/developer/u8558f724d9bd7892d185568bbf43da63)
- Enhanced Safe Browsing: Trusted ([what this means](https://extensiontracker.com/enhanced-safe-browsing))
- Category: [Productivity › Education](https://extensiontracker.com/category/productivity/education)
- First published: 2025-03-04
- Last updated: 2026-11-02
- Version: `1.4.1`
- Size: 38.61 MiB
- Minimum Chrome: 88
- Languages (2): English, 中文（中国）
- Chrome Web Store: <https://chromewebstore.google.com/detail/mooon-japanese-webpage-su/fejbaoplibjdpbdlebomlhpncffgcchc>
- View its code or download CRX: <https://crxpeek.com/extension/fejbaoplibjdpbdlebomlhpncffgcchc>
- Search Google for the ID: <https://www.google.com/search?q=%22fejbaoplibjdpbdlebomlhpncffgcchc%22&tbs=li:1>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-11-09 | 4,000 | 5.00 | 11 |
| 2026-11-03 | 4,000 | 5.00 | 11 |
| 2026-10-29 | 4,000 | 5.00 | 11 |
| 2026-10-27 | 4,000 | 5.00 | 11 |
| 2026-10-19 | 4,000 | 5.00 | 11 |
| 2026-10-12 | 3,000 | 5.00 | 11 |
| 2026-10-05 | 3,000 | 5.00 | 11 |
| 2026-09-27 | 3,000 | 5.00 | 11 |

## What changed

Every change found on a check, newest first.

- 2026-11-03: New version `1.4.1`, replacing `1.3.10`.
- 2026-10-29: New version `1.3.10`, replacing `1.3.9`.

## Developer history

Moves to another publisher account and new contact emails, newest first.

No move to another account and no new contact email since tracking began on 2026-09-27.

We know contact emails only by a keyed hash, so they're never shown. Recent changes: [Account and contact changes](https://extensiontracker.com/owners/).

## What it can access

From the extension's manifest, in plain language.

**Every website:** it can read and change your data on all the sites you visit.

### Sites

- `https://www.youtube.com/*`: www.youtube.com
- `https://youtube.com/*`: youtube.com

### Sites where it runs scripts

- `http://*/*`: Every website
- `https://*/*`: Every website

### Browser features

- `identity`: Sign you in with your Google account
- `scripting`: Run scripts on sites it can reach
- `sidePanel`: Show a side panel
- `storage`: Save settings and data in your browser
- `tabs`: Read the addresses and titles of your tabs
- `tts`: Read text aloud
- `windows`: Manage browser windows

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [Latinae — Latin reader](https://extensiontracker.com/extension/oklecabigfloldhobnbfghfieghamceb) | 19 | 3.00 | 1 | Education |
| [Latinae: Latin Reader](https://extensiontracker.com/extension/eifojedinkgifmknfokjejdmdajklfpe) | – | – | – | Education |

All 3 extensions by [Mooon](https://extensiontracker.com/developer/u8558f724d9bd7892d185568bbf43da63).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-11-09 22:07 UTC; next check around 2026-11-16.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Mooon: Japanese Webpage & Subtitle Reading Assistant” (fejbaoplibjdpbdlebomlhpncffgcchc). Chrome Web Store data, last checked 2026-11-09. https://extensiontracker.com/extension/fejbaoplibjdpbdlebomlhpncffgcchc. Accessed 2026-11-13.

```bibtex
@misc{extensiontracker_fejbaoplibjdpbdlebomlhpncffgcchc,
  title   = {Mooon: Japanese Webpage & Subtitle Reading Assistant (fejbaoplibjdpbdlebomlhpncffgcchc)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-09},
  url     = {https://extensiontracker.com/extension/fejbaoplibjdpbdlebomlhpncffgcchc},
  urldate = {2026-11-13}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/fejbaoplibjdpbdlebomlhpncffgcchc>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Every page except search comes as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.