Constantly improving with you
Immersive subtitles
Toggle interlinear glosses, native furigana, and phonetic readings like Romaji, Pinyin, and Romanization of Korean. Hide lines to test yourself, then reveal them when you need help instead of breaking the flow of the scene.
Supported languages
All 10 languages are fully supported on the Free tier for core subtitles. The Supporter Beta tier unlocks interlinear glosses. These are currently available for Japanese and Korean, with more languages coming soon.
Supported platforms
Supported browsers
Desktop
Mobile
See what's compatible instantly
FreeBefore you start a movie or episode, glossa can tell you whether what you're watching supports the language features you need (this is thousands of titles for each platform). That means less guessing and fewer dead-end watches.
Build your deck
Supporter BetaEvery word you click is saved to your running vocabulary list. Export to Anki later or let glossa track your progress across episodes so repeated exposure turns into actual recall.
Privacy first. Seriously.
glossa only needs your email to authenticate you. Free users' data never leaves your device beyond that. Supporter Beta accounts sync your vocabulary list to the cloud so it follows you across browsers and devices. Your data is never sold or used for advertising.