Language Reactor

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Learn languages effectively by watching films and series in your target language.

Latest reviews

• (2025-08-28) Previously on YouTube, both English and Turkish translations were shown. Now, instead of showing the translation in my native language, there is only a dash symbol. If this is a paid feature, I am willing to purchase it, but there is no such option available. What is the point if translations are only shown in one language now? Uploading the extension seems meaningless this way. Please restore it to its previous state or explain why it has changed.
• (2025-08-28) Previously on YouTube, both English and Turkish translations were shown. Now, instead of showing the translation in my native language, there is only a dash symbol. If this is a paid feature, I am willing to purchase it, but there is no such option available. What is the point if translations are only shown in one language now? Uploading the extension seems meaningless this way. Please restore it to its previous state or explain why it has changed.
• (2025-08-27) best extension by far. Great work
• (2025-08-27) Payed for this app, while i choose swedish translation it either shows me Norwegian or the original language shown. Sometimes it doesnt even show the translation. Sad cuz its a good idea but the developer just ignores what the users are asking for and dont even answer on their forums.
• (2025-08-26) why do i have to press 2 clicks to copy the whole sentence, if i press the 3 dots, its obvious that i want to copy the full sentence
• (2025-08-25) I feel like using this app for free is illegal. too good
• (2025-08-22) "Problem fetching ASR subs. NETWORK_ERROR" occurs almost everytime, even though I paid for this. Totally disappointing.
• (2025-08-20) The second translation language does not work. "Failed to fetch translations. Wait and try again."
• (2025-08-17) Terrific extension to be honest. Please don't ruin it!
• (2025-08-15) Don't work in Udemy
• (2025-08-15) great, i like it. it's very useful
• (2025-08-14) that's a great job done. I am really pleased with how easily i am learning german with this extention.
• (2025-08-13) Useful and work properly, everything is great
• (2025-08-12) Good!
• (2025-08-12) Language Reactor was good, but lacked video summaries. The community recommended the TinaMind extension, which has subtitle translation and video summaries, solving my problem.
• (2025-08-07) I've been using this for years. The ability to watch with English, Mandarin and mandarin transliteration makes this an incredible tool.
• (2025-08-03) it used to work but now always show language reactor failed to retrieve linguistic data
• (2025-08-01) This app is incredible. but something has happened recently. it is no longer working. doesn't show the translation
• (2025-07-30) Wow! Wish I knew about this hidden gem before. Perfect for learning German on original Youtube videos.
• (2025-07-28) Paid for the premium so I could watch dragon ball z with korean subtitles and dub. It only works about 65% of the time.
• (2025-07-26) I think this extension works really well for watching movies/series in Netflix in original language and with subtitles. Really helped me improve my Spanish. But now I tried their automated speech recognition for subtitles in Catalan and it's not good enough, subtitles are incorrect.
• (2025-07-20) Would give it 5 stars but it stopped working on youtube.
• (2025-07-20) The exact tool I was looking for, I love it for netflix.
• (2025-07-20) This extension is brilliant!! Not only the awesome subtitle options (where I can add the simplified Chinese characters PLUS Pinyin PLUS English transaltion), which are the tip of the iceberg, but being able to click on individual words and mark them as "learning" or "known" (as well as having an explanation of how that word is working within that sentence) and then being able practise them by listening to other example sentences with those words throught the PhrasePump is so far the best learning method that I have found for me! Thank you so much to the creators of this extension!
• (2025-07-16) Outstanding
• (2025-07-13) The translation feature on YouTube works inconsistently, in most cases, it simply doesn't work. And this is in the paid version.
• (2025-07-12) For Vietnamese to English translations, it's pretty good overall, but the pronouns are often incorrect. Vietnamese has over 10 ways of saying I and you depending on the gender, context, age difference, etc. so it's a challenge for machine translation.
• (2025-07-12) I think the functionality of the site is incredible, I just feel like there should be some kind of user input for translations as well. I think I would use it for practice, and it would allow people who recognize some words to be able to translate them in. For example, sometimes you might be able to understand a language well enough to at least be able to type the sounds in from what you hear, and I think the auto translate option should end up being useful from there. I think this would be great especially for the shows with few subtitles.
• (2025-07-06) This tool is incredible the level of detail and features to learn languages are superb. I'm considering on paying premium
• (2025-07-05) Stopped working
• (2025-07-05) cannot log in and sign up，ghost，
• (2025-07-05) Super cool concept and nice UI for seeing subtitles in two languages simultaneously!
• (2025-07-01) GOOD EXTENSIONS
• (2025-07-01) It's good because it allows me to watch Netflix with CC subtitles which I can't do otherwise and change entirely how I'm able to learn with the show, but there's just been so many frustrating errors like right not I can't use it and I've uninstalled, reinstalled, signed in signed out, checked for updates, restarted etc.
• (2025-06-29) awesome
• (2025-06-27) hi, here is the idea to improve the user's experience, how about turn Auto Pause on only if there are unknown word in the phrase?
• (2025-06-25) Absolutely critical to my language learning journey. There are some small bugs but overall it's super feature rich and useful for learning by watching Youtube, I don't what I would've done before this!
• (2025-06-24) It was good, but lacked video summaries. The community recommended the TinaMind extension, which has subtitle translation and video summaries, and solved my problem.
• (2025-06-22) Been using for just a day and its one of my favorites immedietly - and i say that as someone running 50 extensions and user scripts, so many different tools packed into one working package
• (2025-06-15) Very good tools for learning!
• (2025-06-13) stop working recently for some reason
• (2025-06-13) I don't know what the problem is, but it works on Google Chrome and doesn't work on Brave. I have been using this extension for one year now, and this is the first problem. Please fix it.
• (2025-06-13) recently not working
• (2025-06-12) not working
• (2025-06-12) I'm a premium user, and I've always used this extension to learn English. I love this extension, but it doesn't work on YouTube anymore. Without YouTube support, this extension becomes unusable in my opinion. I hope it can be fixed soon. If this is fixed, I will change my review. Update (Jun 12, 2025): I found a way to use Language Reactor. The issue was related to recent changes YouTube made to block ad blockers, which also affected Language Reactor. I decided to try the Brave browser to solve the ad blocker problem, and out of curiosity, I tested Language Reactor there. As I suspected, the extension started working. So, I ended up solving two problems at once—maybe this can help you too.
• (2025-06-11) This is a great extension and a fantastic tool for assisting with language learning. Currently it is not working on youtube. I'm still giving 5 stars because the devs have acknowledged that a change with youtube has broken the extension and are working to fix it.
• (2025-06-11) Doesn't work on YouTube now
• (2025-06-11) not working in youtube now , what problem?
• (2025-06-10) It doesn’t work on YouTube like it used to. Is there any way to fix it, please?
• (2025-06-10) Doesn't work on youtube as advertised