# DuSubs: Dual Language Subs

> Dual subtitles for YouTube and Bilibili with support for language learning features such as pinyin, furigana, and hovering for definitions. Export words to anki or use www.dusubs.com to practice freely

Canonical page: [https://chrome-stats.com/d/dusubs](https://chrome-stats.com/d/dusubs)

## Overview

- **ID:** `dusubs`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Finn
- **Category:** language-support,photos-music-videos
- **Daily users:** 5
- **Weekly downloads:** 3
- **Version:** 1.3.0
- **Last updated:** 2026-08-13
- **First published:** 2026-06-13
- **Size:** 20 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/dusubs/)

## Description

Dual subtitles on YouTube and Bilibili - show any two tracks at once
Optionally enable Pinyin for Chinese characters or Furigana for Japanese  while you watch

Hover any word to read its English definition or to save it to a study list
Export saved words to Anki, Quizlet, or use the companion site <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/f3113adf8b378d4411a401acf573a904eace2a50a42c2282f0ab23ff9a4635fa/https%3A//www.dusubs.com/" rel="nofollow">dusubs.com</a>
Adjustable font size, position, colour, stroke, shadow, and background per track

## Rankings

- #45,597 — Overall
- #22 — quizlet
- #150 — definition
- #166 — language

## Permissions and access

### Permissions

- `activeTab`
- `tabs`
- `storage`
- `webRequest`
- `https://www.dusubs.com/*`
- `https://dusubs.com/*`
- `*://*.youtube.com/*`
- `*://*.bilibili.com/*`
- `*://*.bilivideo.com/*`

### Content script matches

- `www.youtube.com`
- `m.youtube.com`
- `www.bilibili.com`
- `www.dusubs.com`
- `dusubs.com`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension was recently updated in the past month. New updates may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/dusubs)