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DualSubtitle

ExtensionEducation
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Overview

YouTubeの字幕をリアルタイム翻訳して表示。Pro版で翻訳先言語を自由に選択できます。

DualSubtitle overlays a real-time translation directly beneath YouTube's native captions, so you can watch and understand without ever leaving the video. HOW IT WORKS ───────────────────────────── 1. Enable captions on any YouTube video 2. The translated subtitle appears automatically below the original 3. Toggle on/off anytime from the extension popup FREE PLAN ───────────────────────────── • Translate any YouTube video into Japanese • Instant display with smart caching (no repeated API calls) • Zero setup — no API key required PRO PLAN (¥480/month) ───────────────────────────── Unlock all 12 translation languages: 🇯🇵 Japanese 🇺🇸 English 🇨🇳 Chinese (Simplified) 🇰🇷 Korean 🇪🇸 Spanish 🇫🇷 French 🇩🇪 German 🇵🇹 Portuguese 🇷🇺 Russian 🇻🇳 Vietnamese 🇮🇩 Indonesian 🇹🇭 Thai Perfect for language learners who want to immerse in YouTube content across multiple languages. PRIVACY ───────────────────────────── • No account required • No personal data collected • Translation is processed via Google Translate • See our privacy policy for details

Details

  • Version
    0.2.0
  • Updated
    May 27, 2026
  • Features
    Offers in-app purchases
  • Offered by
    saitoooo
  • Size
    17.42KiB
  • Languages
    English (United States)
  • Developer
    齋藤正貴
    中央林間４丁目２４−３ メゾンセイジョウ ４０３ 大和市, 神奈川県 242-0007 JP
    Email
    m.masaki.sm@gmail.com
    Phone
    +81 80-3143-4515
  • Trader
    This developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.

Privacy

Manage extensions and learn how they're being used in your organization

DualSubtitle has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

DualSubtitle handles the following:

Website content

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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