EasyDualSub - Merge & Watch Dual Subtitles by Alim

Merge native subtitles on Netflix, Disney+, Prime & YouTube. Perfect dual language translations, zero setup. Just click and chill!

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About this extension

Watch Netflix, YouTube, and Prime Video with two subtitles at the same time! EasyDualSub is the ultimate dual subtitle extension for language learning and bilingual viewing. Our Smart Merge keeps the original humor and context perfectly intact.

🔥 Why EasyDualSub is a Game Changer
Unlike basic browser extensions that rely on clunky, literal machine translation, EasyDualSub introduces a unique "Smart Merge" algorithm. When a streaming platform provides two official subtitle tracks (for example, official English and official French tracks), we merge them natively. This means you get studio-quality translations that preserve the actual jokes, idioms, and cultural nuances of the scene. No more robotic, word-for-word mistakes!

✨ Key Features & Functionality

🎬 Universal Streaming Support: Works seamlessly across major VOD platforms including Netflix, Amazon Prime Video, Disney+, Max (HBO), and YouTube. Just one add-on for all your streaming needs.

🧠 Intelligent Player Integration: No more hidden video controls! Our adaptive layout automatically detects the video player's UI. When you hover or pause, the subtitles dynamically move up, ensuring your screen and progress bar are never blocked.

🌍 Seamless AI Translation: Is an official track missing for your language? Use our built-in seamless translation engine to generate a secondary track on the fly. You can even hide the source text and only display the translated version.

🎨 100% Customizable UI: "Your subs, your way." Enjoy a comprehensive control panel to adjust the top and bottom subtitles independently. Tweak text size, colors, background opacity, vertical position, and the gap between languages for the perfect viewing comfort.

⚡ Lightweight & Fast: Deeply optimized for Firefox to ensure zero lag, no video buffering, and a smooth, native-feeling streaming experience.

🎓 Perfect For:

Language Learners: The absolute best way to study English, Spanish, French, Japanese, Korean, or any new language. Shadow the target language while using your native language right below it as a safety net.

Bilingual Couples & Families: Stop fighting over the TV remote or compromising on movie night. Display both languages simultaneously so everyone can understand and enjoy the show together.

Expats: Keep up with local shows while having a translation in your mother tongue.

🔒 Privacy First & Secure
We believe your viewing history belongs strictly to you. EasyDualSub is a privacy-focused extension. We do NOT collect personal data, we do NOT track the videos you watch, and all your customization preferences are saved locally directly on your machine.

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Permissions and data

Required permissions:

Access your data for sites in the amazon.ae domain
Access your data for sites in the amazon.ca domain
Access your data for sites in the amazon.co.jp domain
Access your data for sites in the amazon.co.uk domain
Access your data for sites in the amazon.com.au domain
Access your data for sites in the amazon.com.br domain
Access your data for sites in the amazon.com.mx domain
Access your data for sites in the amazon.com.tr domain
Access your data for sites in the amazon.com domain
Access your data for sites in the amazon.de domain
Access your data for sites in the amazon.es domain
Access your data for sites in the amazon.fr domain
Access your data for sites in the amazon.in domain
Access your data for sites in the amazon.it domain
Access your data for sites in the amazon.nl domain
Access your data for sites in the amazon.pl domain
Access your data for sites in the amazon.sa domain
Access your data for sites in the amazon.se domain
Access your data for sites in the amazon.sg domain
Access your data for sites in the disneyplus.com domain
Access your data for sites in the netflix.com domain
Access your data for sites in the primevideo.com domain
Access your data for sites in the youtube.com domain
Access your data for play.hbomax.com
Access your data for play.max.com
Access your data for subtiltee.com

Optional permissions:

Access your data for sites in the amazon.ae domain
Access your data for sites in the amazon.ca domain
Access your data for sites in the amazon.co.jp domain
Access your data for sites in the amazon.co.uk domain
Access your data for sites in the amazon.com.au domain
Access your data for sites in the amazon.com.br domain
Access your data for sites in the amazon.com.mx domain
Access your data for sites in the amazon.com.tr domain
Access your data for sites in the amazon.com domain
Access your data for sites in the amazon.de domain
Access your data for sites in the amazon.es domain
Access your data for sites in the amazon.fr domain
Access your data for sites in the amazon.in domain
Access your data for sites in the amazon.it domain
Access your data for sites in the amazon.nl domain
Access your data for sites in the amazon.pl domain
Access your data for sites in the amazon.sa domain
Access your data for sites in the amazon.se domain
Access your data for sites in the amazon.sg domain
Access your data for sites in the disneyplus.com domain
Access your data for sites in the dssedge.com domain
Access your data for sites in the dssott.com domain
Access your data for sites in the media.max.com domain
Access your data for sites in the netflix.com domain
Access your data for sites in the nflxvideo.net domain
Access your data for sites in the primevideo.com domain
Access your data for sites in the pv-cdn.net domain
Access your data for sites in the youtube.com domain
Access your data for play.hbomax.com
Access your data for play.max.com
Access your data for translate.google.com
Access your data for api-free.deepl.com
Access your data for api.deepl.com
Access your data for api.groq.com
Access your data for api.openai.com
Access your data for generativelanguage.googleapis.com
Access your data for openrouter.ai
Access your data for subtiltee.com

Data collection:

The developer says this extension doesn't require data collection.