SmartDub — YouTube Video Translator & Dubbing

Bilingual subtitles, AI translation & dubbing for any YouTube video — watch and understand foreign videos in your language.

Watch any foreign-language YouTube video in your own language. SmartDub adds bilingual subtitles, AI-powered translation, and natural AI dubbing to every YouTube video — right inside the page, no signup required to get started. Whether you're learning a language, studying online courses, or just enjoying creators from around the world, SmartDub helps you translate and dub YouTube videos in seconds. ★ What you get for free • Bilingual subtitles on any YouTube video — forever free • Free basic subtitle translation into 50+ languages • Free basic dubbing — hear the video in your target language without spending a cent • Adjustable subtitle style: font size, color, position, and opacity • Sidebar subtitle list with timestamps — click any line to jump to that moment • One-click floating button on every YouTube video page ★ Upgrade to SmartDub Pro Everything in Free, plus: • Multi-tier AI dubbing — 50+ languages, 30+ voices, regional accents (English US/UK/AU/IN, Mandarin, Spanish, Portuguese, French, Japanese, Korean & more) • Smooth Dubbing — 500 min/month, high-quality AI voices • Immersive Dubbing — 50 min/month, top-tier AI voice model • Higher-quality AI translation: more accurate, coherent, and context-aware for interviews, dialogue, and long videos • Local audio cache — replayed segments don't consume your quota • Priority email support ★ How it works 1. Install SmartDub and open any YouTube video 2. Click the SmartDub icon to open the side panel 3. Pick your target language — bilingual subtitles and translation appear instantly 4. Switch to the Dubbing tab to start AI dubbing in one click ★ Pricing SmartDub is free to install and use. Pro features are available via a paid subscription ($5.90/month or $55/year). All payments are handled securely through our website — SmartDub, not Google, is the seller. Refund policy and full terms are available at smartdub.io. ★ Privacy SmartDub only runs on YouTube pages. We do not collect your browsing history, do not collect personal data unrelated to the service, and do not sell user data to third parties. Full privacy policy: smartdub.io/privacy.