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
Dual subtitles are free in all 10 languages. Supporter Beta adds a meaning under every word, in 8 of them.
| Language | FreeDual subtitles | Supporter BetaWord-by-word glosses |
|---|---|---|
| Japanese 日本語 | ✓ | ✓ furigana, romaji |
| Korean 한국어 | ✓ | ✓ romanization |
| Chinese 中文 | ✓ | ✓ pinyin |
| French Français | ✓ | ✓ |
| Spanish Español | ✓ | ✓ |
| German Deutsch | ✓ | ✓ |
| Italian Italiano | ✓ | ✓ |
| Portuguese Português | ✓ | ✓ |
| English | ✓ | – |
| Hindi हिन्दी | ✓ | – |
Supported platforms
- Netflix
- Prime Video
Supported browsers
- Chrome
- Edge
- Brave
- Firefox
On desktop. Firefox and Edge on Android are coming soon.
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, and send the subtitle lines you watch to our server to compute the glosses, without keeping a record of what you watch. Your data is never sold or used for advertising.