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Instantly turn YouTube videos into natural speech in your language. Real-time AI translation and dubbing. InstDub is the ultimate AI-powered video translator and dubber for YouTube. Press play in English, listen in Mandarin, Spanish, Arabic, or 18+ other languages with natural voice synthesis. Why InstDub? • Real-time translation — get subtitles as you watch • Natural AI dubbing — never robotic, choose voice that matches content • Works on any YouTube video — no download needed, all processing in the cloud • Privacy-first — your data is never sold How it works 1. Open a YouTube video 2. Click the InstDub floating button 3. Choose your target language 4. Get instant subtitles + optional AI dubbing 5. Hit play — audio syncs with the video Features • 18+ target languages • Natural voice synthesis (Volcengine / Gemini TTS) • Auto voice matching based on video content • Smart caching for instant replay • Ducking — original audio lowers during dubbing • Speed control without pitch distortion Free vs Pro Free: 2 hours/week, 6 hours/month cap Pro ($9.9/month): 90 hours/month, all voices Ultra ($19.9/month): 180 hours/month, priority support Privacy Your videos are processed in real-time and never stored. Account data is yours to export or delete anytime. Read our full policy: https://instdub.com/privacy Support Email: support@instdub.com
Aug 5, 2026
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Media assets
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Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.