Does Dualsub still work on Netflix, Disney+ or Prime Video?

What changed in Dualsub, and when

Dualsub stopped supporting the big streaming services in late 2024. Its changelog lists each site it dropped and each feature it removed; these are the main changes that older guides don't reflect:

Version	Date	Change
2.47.0	October 30, 2024	Dropped Prime Video
2.49.0	November 26, 2024	Dropped Netflix and Disney+
2.53.0	December 27, 2024	Removed the Chinese pinyin and Japanese furigana features
2.55.0	December 29, 2024	Removed native mode
2.62.0	May 30, 2025	Removed the YouTube auto-translate feature
2.66.0	November 7, 2025	Dropped bilibili, Coursera and Udemy

So a guide that walks you through Dualsub on Netflix, or through its native mode, describes a version from before these changes. The changelog gives no reasons, and we won't guess them.

What Dualsub does today

Dualsub now describes itself as a YouTube subtitle translator: "Translate and display dual subtitles on YouTube and other video websites. Lightweight, simple, and efficient." Its list of supported sites has YouTube, including the mobile site, and a few other video sites, among them Viki, Youku and iflix. It runs in Chrome, Edge and Firefox, and the Firefox add-on is marked compatible with Firefox for Android.

The extension is free to install; AI translation is the paid part, with a free quota and a key issued without registration. Its translation page says that service is "optimized specifically for translating English subtitles." It's also widely used: on October 30, 2026, its Chrome Web Store listing showed 100,000 users and its Edge listing 44,919 active installs, and its Firefox listing dates back to October 2018.

Where Lingosive is different

Streaming services. Lingosive adds dual subtitles on Netflix, Disney+, Prime Video and HBO Max as well as YouTube, in Chrome, Edge, Brave and other Chromium browsers on a computer.

Made for learning words, not only for reading along. Every word in the top line is clickable: hover for a quick translation, or click for other meanings, pronunciation, other lines from the same episode that use it, and a Learn button that saves it to your list. Saved words come back as FSRS flashcards on the web and in the iPhone and Android apps. Lingosive AI explains a word in its sentence (10 explanations a day on the free plan), and Word in Film plays short movie and TV scenes where a word or phrase is said.

How the second line is made. Lingosive's second line is a machine translation into your language. It's free on all five sites, needs no account and works even when a title has no subtitles in your language. You do need subtitles on in the language you're learning, because that's the line Lingosive makes clickable.

A Dualsub alternative for Netflix, Disney+ and Prime Video

Dualsub no longer works on Netflix, Disney+ or Prime Video, so dual subtitles there now take a different extension. With Lingosive, it's three steps:

1. Add Lingosive for Chrome on your computer. It also runs in Edge and Brave.
2. Play a title on Netflix, Disney+, Prime Video or HBO Max, and turn on subtitles in the language you're learning in the player menu.
3. Click the layers icon next to the subtitle line, or press N, to add a translation line in your language.

For the details on each service, see the setup guides for Netflix dual subtitles, dual subtitles on Disney+ and Prime Video dual subtitles. Lingosive is an independent tool with no affiliation to Netflix, Disney+, Prime Video, HBO Max or YouTube, and its plans are on the pricing page.

When Dualsub is the better pick

If you only watch YouTube, Dualsub is a good choice: free to install, light, and available for Firefox, which Lingosive isn't. It also covers a few sites Lingosive doesn't, such as Viki. For more options, see our best dual subtitle extensions for Chrome, or Lingosive vs Language Reactor if you watch Netflix and YouTube and want another tool that still covers Netflix.