Chrome extension · YouTube & Netflix
LoopLab for Chrome
Your ears hear it. Your brain learns it.
Loop any sentence of a YouTube or Netflix video, hear what native speakers really say, and save the phrases your brain is still learning.
Getting started
- 1
Pin LoopLab to the toolbar
Click the puzzle-piece icon (Extensions) at the top right of Chrome, then the pin next to LoopLab. The LoopLab icon is your way in, especially on Netflix.
- 2
YouTube: just open a video
The LoopLab panel appears next to the video by itself, with the subtitles. Click a sentence to loop it; click two words to loop just that part.
- 3
Netflix: turn it on once
In the YouTube panel click “Turn on for Netflix”, or on a Netflix episode click the LoopLab icon (it shows a red N) and choose Enable on Netflix. Chrome asks once; then LoopLab appears on every episode with Netflix’s subtitles.
Loop exactly what you missed
- ●Press , (comma) to loop the line playing right now; press again to release
- ●Click a line's time stamp, or a start word and an end word for a phrase loop
- ●Set A and B by hand and fine-tune by 0.1 s
- ●Arrow keys jump between subtitle lines and move a running loop
Train your ears
- ●Hide the subtitle text: first letters only, or dots
- ●Gap: a pause after each pass to say the line back
- ●Slow down to 0.75× or 0.5×
- ●The site's own captions are hidden while you practise
Understand every word
- ●Click a word for its meaning in this sentence, including base forms
- ●✨ AI explains the word in its sentence, in your language (15 languages)
- ●Hear any word read aloud, slowly on a second press
- ●A web dictionary for your language pair, one click away
Keep and review
- ●Save loops with their subtitle text and star favorites
- ●A Library of your videos — YouTube and Netflix
- ●Sign in to sync loops and words with the LoopLab app on your phone
- ●Export subtitles, Anki CSV, Markdown, and a full backup
How micro shadowing works
Once your brain knows the pattern, you can hear it.
Hear
Watch a video in the language you're learning, with subtitles on. When a phrase goes by too fast, stop there.
Loop
Loop exactly that line, phrase, or word. Shorter is better: micro shadowing works in small pieces.
Learn the pattern
See the words, hear them read clearly, then listen again at native speed until it clicks.
Free to use. Pro when you want more.
Free
Loops, subtitles, word meanings, read-aloud, export, and backup. 30 saved loops on up to 5 videos, 5 AI explanations a day, and LoopLab on 3 Netflix episodes to try.
Pro · $5.99 / month or $39.99 / year
Unlimited saved loops and AI explanations, LoopLab on Netflix with no episode limit (with your own Netflix subscription), and everything synced to the LoopLab app. One Pro for Chrome, iPhone, and Android.
Questions
Which videos does it work with?
YouTube videos with subtitles (CC) in any language, and Netflix titles with subtitles. Word meanings and AI explanations work for English, German, Spanish, French, and more.
Where is LoopLab on Netflix?
Turn it on once: click the LoopLab icon in Chrome's toolbar on a Netflix episode (it shows a red N), or “Turn on for Netflix” in the YouTube panel. Pin the icon first (puzzle piece → pin).
Why does LoopLab show auto-generated subtitles on some videos?
Some channels, especially news clips cut from live TV, upload the captions typed live during the broadcast: often ALL CAPS and a few seconds behind the speech. LoopLab notices them and uses YouTube's auto-generated subtitles instead, which are timed word by word, so loops end where the words end. Prefer the uploaded ones? Click the small CC ⇄ auto tag next to Subtitles.
Where is my data stored?
In your browser. If you sign in, your saved loops, words, and Library sync to your LoopLab account. Subtitle text is processed in the browser; nothing is recorded from the video or audio.
Keys don't work, or something else looks wrong?
See Troubleshooting in the guide (looplablearn.com/guide#troubleshooting): another extension's box holding the keyboard (press Esc), a tab that needs a reload after an update, and more.