DualSubtitle

Tracking since May 23, 2026.

Changelog

• May 29, 2026
  description

  See real-time Japanese translation below every English subtitle on YouTube. Perfect for language learners. No account needed.

  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
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  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
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  • 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)
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  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
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  • No account required
  • No personal data collected
  • Translation is processed via Google Translate
  • See our privacy policy for details

• May 29, 2026
  short_description

  YouTubeで英語字幕の下に日本語訳をリアルタイム表示

  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。

• May 29, 2026
  host_permissions

  https://www.youtube.com/*, https://translate.googleapis.com/*

  https://www.youtube.com/*, https://translate.googleapis.com/*, https://api.lemonsqueezy.com/*

Permissions & access

Permissions

storagetabs

Host access

https://www.youtube.com/*, https://translate.googleapis.com/*, https://api.lemonsqueezy.com/*

Screenshots