LangKey Online Tools

Try LangKey's core capabilities without installing the extension: lookup video subtitles, search TED talks, test selection translate, convert Anki decks.

YouTube Captions Lookup

Paste a video link, extract multi-language subtitle tracks

TED Video Search

Search TED talks and enter learning mode directly

Selection Translate Demo

Try selecting any web text to pop a learning card

Anki Converter

Convert between VocabularyDB and Anki / CSV