Dual Subtitles & Word Lookup
Watch anything in its original language and understand every word — dual subtitles on any site, and a click on any word for an instant translation, dictionary definition, and real examples.
Works everywhere
Reads whatever subtitles the player already shows — native <track>, YouTube captions, or DOM-scraped text on streaming sites. Not limited to one platform.
Click any word
Hover or click a word in the original line to see its isolated translation, the sentence's context, and where else it showed up in the same video.
Dictionary built in
Real definitions, usage examples, and synonyms pulled live for every word you look up — not just a one-line translation.
Full history
Every line seen this session is kept in a searchable side panel — hover any past word for the same lookup, or jump back to that moment in the video.
Export the transcript
Download everything you've watched as a single bilingual .txt file, original and translated lines side by side.
Optional dubbing
Experimental auto-dub using the browser's own speech synthesis — free, no API key, reads the translated line aloud over the muted original.
Install (developer mode)
- Clone or download this repository.
- Open
chrome://extensionsand enable Developer mode. - Click Load unpacked and select the project folder.
- Open the extension popup to pick your languages — no API key required by default.