Chrome
Learn a language from the YouTube videos
you already watch
A transcript panel appears beside any video with captions — in Spanish, English, French, Japanese, Korean, Chinese or German. Follow along as it plays, click a line to jump there, loop it until you catch every word, and ask for a grammar breakdown without leaving the page.
Coming to the Chrome Web Store. Join the waitlist and we'll tell you the moment it's live.
The panel drops into YouTube's own sidebar, above the recommendations — no new tab, no copying transcripts around.
Features
Uses the captions YouTube already has
No files to find, no uploads — open a video in any of the seven languages and the transcript is there. It picks up the caption track's language automatically.
A transcript that follows along
The line being spoken highlights as the video plays and the panel scrolls to keep it in view — without fighting you when you scroll ahead to read.
Per-sentence AI analysis
Hit AI on any line for a grammar and vocabulary breakdown in a full-size panel, written in whichever of the seven languages is your own, and cached so re-opening it is instant and free.
Loop a line, or any range
One click loops a single caption line. Or mark your own A and B points to drill a whole exchange — the same listening practice as the desktop player.
Click a line to jump there
Missed something? Click the line in the transcript and playback moves to it — no scrubbing the timeline to find the moment again.
How it works
Open a video and it's there
Open a YouTube video
The panel appears in the right-hand column, above the recommendations, for any video that has captions.
Click AI on a line
A dialog opens with the grammar and vocabulary of that exact sentence, explained in your own language.
Loop it until it sticks
Loop the line, replay it as often as you like, then carry on watching.
Get the extension
Not on the Chrome Web Store yet
It's in review-and-polish, not released. Join the waitlist and you'll hear the day it ships — and you'll have free analyses waiting when it does.
Want something you can use today? The desktop player works on your own video files right now, on the same account.