Description
YouTube Caption Translator is a small Chrome extension, listed on the Chrome Web Store under Communication extensions, that translates YouTube video captions using Google's Gemini API. It is built by an independent developer, listed on the store as Gene Han, rather than by Google or YouTube directly.
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The extension requires the user's own Gemini API key rather than a bundled or paid key. That key can be generated for free through the Google AI for Developers page, so there is no separate subscription to the extension itself, only whatever usage limits apply to a free Gemini API key. Once the key is added, the extension translates whatever captions are showing on a YouTube video into one of 15 supported languages, including German, English, Vietnamese, Spanish, French, Italian, Portuguese (Brazil), Russian, Arabic, Hindi, Bengali, simplified and traditional Chinese, Japanese, and Korean.
It is a lightweight, single-purpose tool, about 37KB in size, currently at an early version (0.1.0) last updated August 27, 2024, with roughly 74 users and no ratings on the Chrome Web Store at the time of review. The developer's Chrome Web Store disclosure states that user data is not sold to third parties and is not used or transferred for purposes unrelated to the extension's core function, and that the developer has not identified itself as a trader, which affects consumer-rights protections for EU users. Support runs through a developer contact email listed on the store page rather than a dedicated help center.
The extension is useful for anyone watching YouTube videos with captions in a language they do not speak, students following foreign-language lecture or tutorial content, or viewers who want quick, on-page caption translation without copying captions into a separate translation tool. Because it relies on captions that are already showing on a video, it works best on content that already has subtitles or auto-generated captions turned on.
- CategoryAI Translators
- Pricing ModelFree
- DeploymentBrowser extension
- PlatformsChrome
YouTube Caption Translator's Core Features
Translates YouTube captions in real time using the Gemini API
Supports 15 languages including Spanish, French, German, Arabic, Hindi, Japanese, Korean, and both simplified and traditional Chinese
Works with a free, user-supplied Gemini API key rather than a paid subscription
Lightweight extension (about 37KB) with a narrow, single-purpose feature set
Developer discloses no data is sold to third parties on its Chrome Web Store privacy listing
Available directly from the Chrome Web Store with no separate account needed beyond a Gemini API key
How to use YouTube Caption Translator?
Get a Gemini API key: Generate one for free on the Google AI for Developers page.
Install the extension: Add YouTube Caption Translator from the Chrome Web Store.
Add your API key: Enter the Gemini API key in the extension's settings.
Pick a language: Choose your preferred output language from the 15 supported options.
Watch and translate: Open a YouTube video with captions on; the extension translates them automatically.
YouTube Caption Translator's Use Cases
- Foreign-language video watching
- Language learning support
- Lecture and tutorial viewing
