# AI Subtitles & Immersive Translate - Trancy

> Trancy provides bilingual subtitle for platforms like YouTube, Disney+... as well as AI translator for websites.

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

## Overview

- **ID:** `trancyfordesktop`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Trancy
- **Category:** language-support,photos-music-videos
- **Daily users:** 5,239
- **Weekly downloads:** 521
- **Rating:** 4.03 / 5 (62 ratings)
- **Version:** 7.9.3
- **Last updated:** 2026-09-08
- **First published:** 2023-12-26
- **Size:** 5.59 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/trancyfordesktop/)
- **Website:** [https://www.trancy.org/chat](https://www.trancy.org/chat)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/trancyfordesktop/privacy/](https://addons.mozilla.org/firefox/addon/trancyfordesktop/privacy/)

## Description

Trancy turns everyday video watching and browsing into an immersive language-learning experience. Install the extension to get AI-powered bilingual subtitles on platforms like YouTube, Disney+, TED, Coursera and more, with multiple viewing and practice modes, AI captions, grammar analysis, and pronunciation options. Trancy helps you understand content in context while building listening and speaking skills naturally.

Beyond videos, Trancy offers immersive web translation with contextual contrast or full-text replacement, word and sentence translation, AI-generated definitions, and highlighted new words. Collect words, sentences, and videos to build a personal study library, use oral assessment and Microsoft pronunciation playback, and tap the AI assistant or external dictionaries to reinforce learning. Fast to use and customizable, Trancy is made for learners who want steady progress while enjoying the content they love.

## Rankings

- #1,142 — Overall
- #42 — Language Support
- #190 — Photos, Music & Videos
- #24 — ai
- #32 — translate
- #41 — platform

## Permissions and access

### Permissions

- `storage`
- `unlimitedStorage`
- `tabs`
- `activeTab`
- `contextMenus`
- `<all_urls>`

### Content script matches

- `youtube.com`
- `m.youtube.com`
- `www.youtube.com`
- `netflix.com`
- `www.netflix.com`
- `www.coursera.org`
- `coursera.org`
- `www.udemy.com`
- `udemy.com`
- `*.udemy.cn`
- `*.udemy.com`
- `*.ted.com`
- `*.youtube-nocookie.com`
- `*.hbomax.com`
- `*.max.com`
- `*.disneyplus.com`
- `*.edx.org`
- `*.primevideo.com`
- `*.deeplearning.ai`
- `*.bilibili.com`
- `<all_urls>`

## Safety

- **Risk impact:** Very high risk impact
- **Risk likelihood:** Moderate 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).

## Review summary

Users praise the app for its clean UI and promising AI subtitles that improve upon traditional subs, plus useful learning features and affordable pricing. However, reliability is a recurring concern: several reviews report not working after updates, blank translations (Netflix), and issues with certain videos (live streams) or UI interference on YouTube. The tool shows strong potential for learning immersion but reliability issues are its main drawback.

### Pros

- Clean, simple, and user-friendly interface.
- High-quality AI subtitles with translations that are a vast improvement over traditional subtitles.
- Free base version with an affordable Pro option and built-in learning tools (dictionary options, deck creation) for immersion.
- One-stop immersion tool for language learning through media and spaced repetition vocabulary review.
- Overall positive user experience and potential for learning improvement.

### Cons

- Not functioning reliably across sites and after updates; reports of translations going blank and features not working (e.g., Netflix subtitles).
- Does not support YouTube live videos.
- Can lag on platforms like YouTube.
- Enabling the extension can break YouTube UI by hiding comments and the left sidebar.

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