DualSub — Dual Subtitle Translator

Real-time dual subtitles on Netflix, Prime Video, and YouTube. Translate any language pair instantly.

Learn any language faster with real-time dual subtitles on Netflix, Prime Video, and YouTube. DualSub displays the original video subtitle on top (in gold) with your chosen translated language immediately below. Whether you are learning Spanish, Japanese, French, or any other language, DualSub makes it easy to understand every word without losing the context of the scene. ✨ KEY FEATURES: Universal Translation: Select from dozens of source and target language pairs directly in the extension popup. Platform Support: Works flawlessly on YouTube, Netflix, and Amazon Prime Video. Word Hover Dictionary: Pause the video and hover your mouse over any specific word in the original subtitle to see its exact, individual translation. Fast & Lightweight: Runs entirely inside your browser with no lag. Privacy First: No account required, no login, and absolutely zero data collection or tracking. HOW TO USE: Click the DualSub puzzle piece icon in your Chrome toolbar to open the settings. Select the video's original language (Source) and your native language (Target), then click Apply. Open a video on YouTube, Netflix, or Prime Video and turn on the native subtitles (CC). DualSub will automatically detect the text and add your translations right underneath! FREE & OPEN: DualSub is a 100% free educational tool built for language learners worldwide.