glossa: learn while watching Netflix and Prime Video

Think natively: every word explained under the subtitle, instant definitions, and a deck that remembers.

Turn your next episode into language practice. glossa shows Netflix and Prime Video with two subtitle languages at once, lets you shape the subtitles to your screen and taste, and lets you replay dialogue at your own pace. FREE • Dual subtitles: your learning language and a language you know, on screen together. • 10 languages: English, French, Japanese, Spanish, German, Korean, Italian, Chinese, Portuguese and Hindi. • Compatibility badges while you browse, so you never start a title only to find it isn't supported. • Line navigation: jump to the previous or next line with the toolbar or the J and L keys. • Translation practice: show, blur or hide the translation, and hover a blurred line to peek. • Adjustable subtitles: drag, resize, change the text size, background opacity and subtitle colors, or reset the position. SUPPORTER BETA • A meaning under every word: interlinear English glosses in 8 languages (Japanese, Korean, Chinese, French, Spanish, German, Italian and Portuguese). • Context-aware meanings: No more guessing which of twelve dictionary senses was meant. • Reading aids: Japanese furigana and romaji, Chinese pinyin and Korean romanization. • Recall practice: show, blur or hide the reading aids and gloss lines. • Hover any word for its dictionary entry, alternative meanings and, when available, its components. • Click words to mark them as known, with optional gold highlights when they come back. • Your known words sync across browsers and devices. • Anki export: download your saved words with English definitions, in every glossed language. • One-time purchase. No subscription. GET STARTED Sign in, choose your learning and known languages, and open Netflix or Prime Video. Subtitle availability varies by title, region and platform. Streaming subscriptions are not included. Beta features may change. glossa is an independent extension and is not affiliated with Netflix, Amazon or Anki.