Language Reactor icon

Language Reactor

by Dioco

v5.1.7 Updated Mar 6, 2026 3.89MiB
CWS
2M
Users
★ 4.20
4.2K reviews
#17
of 31.9K
education
#2 of 849
1M+ users Recently updated

Description

Language Reactor is a powerful toolbox for learning languages. It helps you to discover, understand, and learn from native materials. Studying will become more effective, interesting, and enjoyable! (formerly called 'Language Learning with Netflix') Netflix The extension adds dual language subtitles, a popup dictionary, precise video playback controls and many more features when watching films and series on the Netflix website! YouTube Thousands of channels for you to watch on any topic you can imagine! Develop your comprehension with authentic language in context. Books and Websites Import text, Language Reactor will add a machine translation in your language and read the text with super-realistic text-to-speech. Our extension runs on Google Chrome on desktop and laptop computers running Windows and MacOS.
Language Reactor screenshot 1Language Reactor screenshot 2

Reviews (200 cached)

★☆☆☆☆2026-02-24
Dorota

The YT application freezes very often - despite purchasing an additional subscription, it very often does not work!

★☆☆☆☆2026-02-24
вадим

just doesnt work..

★☆☆☆☆2026-02-17
nana

Failed to fetch translations. Wait and try again.

★☆☆☆☆2026-02-17
Andrew

Recently the extension is not working. Idk what happened, i hope the problem will be fix really soon. If it is not, i want my money back.

★☆☆☆☆2026-02-04
Reto Hummer

Full of bugs, server error or network error ... unusable ...

★☆☆☆☆2026-01-08
Ollko Dun

"Unable to load subtitles" error

★☆☆☆☆2026-01-06
Kanners Corner

it doesn't work most of the time and when it does - it doesn't really translates the words in any manner someone would use

★☆☆☆☆2026-01-04
A BC

several months error: Failed to fetch translations. Wait and try again.

★☆☆☆☆2025-12-27
Alex Li

Same as the review below! "Problem fetching translations. SERVER_ERROR" I just want to be able to have dual subtitles, but the english translations are not working.

★☆☆☆☆2025-12-27
Sabrina Chen

Hello, I’m getting persistent server errors: “Server error – cannot fetch index of saved items” and “Unable to load flashcard metadata.” Logging out and back in does not fix it. This appears to be an account-level server-side issue. Could you please reset or rebuild my saved items index and flashcard metadata for my account? Thank you very much.

★☆☆☆☆2025-11-29
Skye Cornell

Makes you pay for anything. Why would you want the subtitles to the language you already know?

★☆☆☆☆2025-11-11
Cole Berard

Why would I want a read out of the language I already know. I want to hear the translation..... How hard is that? It seems like a given.

★☆☆☆☆2025-11-11
Shay Green

Can't do anything unless you pay. All of a sudden you have to pay now even to see the native language subtitles. It's completely useless. Also there's a glitch on a lot of youtube videos where the subtitles disappear way too fast.

★☆☆☆☆2025-09-10
정준호

tlash, galbage app. developer go to hell youtube live stream? infinity language load error. T.L.A.S.H.A.P.P

★☆☆☆☆2025-08-28
Mustafa Ferat Yilmaz

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
helin

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
Odilon Gardinier

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

★☆☆☆☆2025-08-22
T. Ogata

"Problem fetching ASR subs. NETWORK_ERROR" occurs almost everytime, even though I paid for this. Totally disappointing.

★☆☆☆☆2025-08-15
The Great Planet

Don't work in Udemy

★☆☆☆☆2025-08-03
priyawat p

it used to work but now always show language reactor failed to retrieve linguistic data

★☆☆☆☆2025-07-28
Alex Morgan

Paid for the premium so I could watch dragon ball z with korean subtitles and dub. It only works about 65% of the time.

★☆☆☆☆2025-07-05
Daniel Everett

Stopped working

★☆☆☆☆2025-07-05
Qinghong Zhang

cannot log in and sign up,ghost,

★☆☆☆☆2025-06-12
Vladimir Martirosyan

not working

★☆☆☆☆2025-06-11
Elchin Karimli

Doesn't work on YouTube now

★☆☆☆☆2025-06-10
Usamah Mohamad Yunus

Doesn't work on youtube as advertised

★☆☆☆☆2025-06-07
sky sky

it's not working on YouTube . i am trying to long in on website but still i cannot

★☆☆☆☆2025-05-01
Sara Górniak

Doesn't work

★☆☆☆☆2025-03-28
Simon Buysse

I can't sign in .... it just loops back to netflix

★☆☆☆☆2025-01-10
Mark

It seems to be completely broken. Its search shows ZERO netflix shows with Traditional Chinese, which is absurd since Netflix is huge in Taiwan. Link to Language Reactor's catalogue view: https://www.languagereactor.com/m/nf_zh-TW_- Not only that but when using this plugin, every time I'm on Netflix, it adds a conspicuous "Language Reactor Catalogue" link in the top menu to their catalogue view of zero results.

★☆☆☆☆2025-01-08
Nabil

Tried for the first time. Great Interface and promising potential, but completely useless (Two major issues): I manually downloaded SRT translation from one of my Dutch movies before installing Language Reactor. Then tried using LR, and it gave me all wrong "Original Netflix" subtitles. Every single sentence has a major mistake, replacing an original word with a similar one and translating it (machine translation). Seems like even for the Original text, they actually use Ai to 'listen' to it instead of simply using the actual Netflix captions. Also, I am learning a Germanic Language (German/Dutch) and it is not helping with Separable Verbs (A verb with two parts). I think I will move to LLNY.. they are simpler but at least they don't 'invent' subtitles.

★☆☆☆☆2024-11-18
mido “midodo” dori

It changed, now all japanese translations are no longer availible. It wasnt like this literally a few months ago

★☆☆☆☆2024-10-31
Illus Wing

Most of function are now subscription only.

★☆☆☆☆2024-10-24
João Paulo Gomes

Why do you need reading my browsing history?

★☆☆☆☆2024-10-11
Nejan F

now it doesn't work in youtube! please fix this problem.

★☆☆☆☆2024-09-30
0LACEYDC0

Does not work, at all. It just posts two or random strings of letters and half words.

★☆☆☆☆2024-09-23
Jerome Shijo

Was the best translator available. Unfortunately not working now. Please fix it. Edit: Its working now.

★☆☆☆☆2024-08-06
Vimal Mani

Not working from morning

★☆☆☆☆2024-08-03
dream killar

this is a very bad a ablicationq

★☆☆☆☆2024-08-01
Y Yuan

the button inserted in the youtube is disappeared no matter how many times I re-install the chrome or the extension.

★☆☆☆☆2024-06-02
JIANQIAO ZHU

it's not free to use

★☆☆☆☆2024-05-28
Ellie Greeno

It will not switch over to the language which I want the subtitles in, will only play subtitles in English even after repeatedly selecting Arabic subtitles.

★☆☆☆☆2024-05-21
Jon

Do not pay for this extension. It is an excellent extension that IS NOT UPDATED. The developers are not actively working on this extension. Simple bugs have not been fixed for FOUR YEARS. Wake up developers, you have a golden egg here but you're playing tennis wtih it rather than taking it to the bank. Well.. you took my 14 euros to the bank alright.

★☆☆☆☆2024-05-13
Dominik Gyécsek

Keep settings back to the native language at each episode (even though toggle is turned off), when the extension is enabled there is a slight delay to the audio track

★☆☆☆☆2024-05-02
Akif Demir

Failed to obtain user data from server. Please try reloading the page, or else contact Language Reactor developers. s

★☆☆☆☆2024-05-01
Skylar

Worked for about two days before the subtitles stopped loading.

★☆☆☆☆2024-04-04
Hossein Ghadimkhani

It used to work very well, but it doesn't work since a long time ago on YouTube.

★☆☆☆☆2024-03-31
Judy T

stopped working for me on netflix :(

★☆☆☆☆2024-03-29
Isaac Pattinson

It doesn't work well and the translations are not very accurate. Had to find an alternative. Found FluentAI, which uses AI to give you translations and explanations in tons of different languages. Been using it to learn Korean. Works great. And the features are the same pretty much.

★☆☆☆☆2024-03-16
Palo Melo

work once in ten times on youtube, doesn't even start the video, practically useless

Permissions (4)

Permissions

activeTab Can access the current tab when you click the extension contextMenus Can add items to the right-click menu scripting Can inject scripts into web pages storage Can store data locally in your browser

Details

Version 5.1.7
Updated Mar 6, 2026
Size 3.89MiB
First Seen Mar 22, 2026