Dual Subtitles for YouTube & Netflix — Linglass

Tracking since Apr 1, 2026.

Changelog

• Jun 8, 2026
  name

  Linglass — Learn Languages with YouTube & Netflix

  Dual Subtitles for YouTube & Netflix — Linglass

• May 29, 2026
  description

  Linglass provides dual subtitles on YouTube and Netflix, contextual translation for words and phrases, and smart flashcards with spaced repetition.
  
  Learning a new language doesn't have to feel like studying. Linglass helps you pick up vocabulary naturally — by watching your favorite YouTube videos and browsing websites you already visit. Click any word to see its meaning in context, save it with one tap, and review it later with intelligent flashcards. The more you watch, the more you learn.
  
  📺 Dual Subtitles on YouTube and Netflix
  
  - Original and translated subtitles displayed simultaneously
  - Click any word in subtitles for instant translation
  - Select phrases for contextual translation
  - Adjust subtitle font size and position
  - Works on both YouTube and Netflix
  
  🎬 Netflix Support
  
  - Dual subtitles for Netflix shows and movies
  - Click any word in Netflix subtitles for instant contextual translation
  - Save vocabulary from Netflix scenes to your flashcards with one click
  - Cover art and scene context automatically attached to saved cards
  - Works with all text-based Netflix subtitle tracks
  
  🔍 Contextual Translation
  
  - Click any word — get meaning based on context, not just a dictionary entry
  - Select phrases for accurate multi-word translation
  - Phonetic transcription and native pronunciation
  - Save words and phrases to vocabulary with one click
  - Works in subtitles and on any webpage
  
  🧠 Smart Flashcards with FSRS
  
  - Spaced repetition adapts to your memory
  - Review with real video context — sentence, translation, and frame
  - Track your learning progress and streaks
  
  🌐 Translate Anywhere on the Web
  
  - Select any word on any website for instant translation
  - Wikipedia, news, blogs, articles — learn while browsing
  - Same contextual translation as in YouTube subtitles
  
  ⚖️ Comparison with Other Extensions
  
  How Linglass compares to popular subtitle extensions:
  
   * Language Reactor (a.k.a. "Language Learning with Netflix"): Offers dual subtitles on YouTube and Netflix with a click-to-translate dictionary and Anki export for saved words. Linglass matches the dual subtitles and translation, and adds per-word pronunciation audio, phonetic transcription, and built-in flashcards with spaced repetition — no Anki setup required.
  
   * Trancy: Supports bilingual subtitles on YouTube, Netflix, and many other video platforms, plus GPT-based grammar analysis and a mobile app. Linglass takes a more focused approach — YouTube and Netflix only — with a free tier that includes built-in flashcards, contextual translation, and a clean, distraction-free subtitle interface.
  
   * Migaku: Known for deep Anki integration and strong support for Japanese learners, with a paid subscription and a mobile app. Linglass takes a simpler path — flashcards are built in (no Anki setup needed), there is a free tier, and the same toolset works across 22 languages.
  
   * Lingopie: A streaming service with its own content library and bilingual subtitles. Linglass is a browser extension you bring to the YouTube and Netflix content you already watch — no separate subscription, no platform lock-in.
  
  A complete loop for learning vocabulary — watch, translate, save, review — not just dual subtitles.
  
  🌍 Supported Languages
  
  English, Russian, German, Spanish, French, Italian, Portuguese (Brazil and Portugal), Japanese, Korean, Chinese (Simplified and Traditional), Thai, Vietnamese, Indonesian, Turkish, Polish, Hindi, Arabic, Swedish, Dutch, and Czech.
  
  Free to use with daily limits. Premium removes all limits.
  
  💬 Contact Us
  
  - Website: https://linglass.app
  - Support: [email protected]

  Linglass provides dual subtitles on YouTube and Netflix, contextual translation for words and phrases, and smart flashcards with spaced repetition.
  
  Learning a new language doesn't have to feel like studying. Linglass helps you pick up vocabulary naturally — by watching your favorite YouTube videos and browsing websites you already visit. Click any word to see its meaning in context, save it with one tap, and review it later with intelligent flashcards. The more you watch, the more you learn.
  
  📺 Dual Subtitles on YouTube and Netflix
  
  - Original and translated subtitles displayed simultaneously
  - Click any word in subtitles for instant translation
  - Select phrases for contextual translation
  - Adjust subtitle font size and position
  - Works on both YouTube and Netflix
  
  🎬 Netflix Support
  
  - Dual subtitles for Netflix shows and movies
  - Click any word in Netflix subtitles for instant contextual translation
  - Save vocabulary from Netflix scenes to your flashcards with one click
  - Cover art and scene context automatically attached to saved cards
  - Works with all text-based Netflix subtitle tracks
  
  🔍 Contextual Translation
  
  - Click any word — get meaning based on context, not just a dictionary entry
  - Select phrases for accurate multi-word translation
  - Phonetic transcription and native pronunciation
  - Save words and phrases to vocabulary with one click
  - Works in subtitles and on any webpage
  
  🤖 AI Grammar Explanation
  
  - Select any sentence in YouTube or Netflix subtitles — or on any webpage — and get a structured grammar breakdown
  - See which grammatical constructions are used, with a CEFR / JLPT / HSK / TOPIK level label so you know what's worth learning next
  - Understand the role of each part of the sentence in your native language
  - Integrated directly into the dual-subtitle popup — no need to switch contexts
  
  🧠 Smart Flashcards with FSRS
  
  - Spaced repetition adapts to your memory
  - Review with real video context — sentence, translation, and frame
  - Track your learning progress and streaks
  
  🌐 Translate Anywhere on the Web
  
  - Select any word on any website for instant translation
  - Wikipedia, news, blogs, articles — learn while browsing
  - Same contextual translation as in YouTube subtitles
  
  ⚖️ Comparison with Other Extensions
  
  How Linglass compares to popular subtitle extensions:
  
   * Language Reactor (a.k.a. "Language Learning with Netflix"): Offers dual subtitles on YouTube and Netflix with a click-to-translate dictionary and Anki export for saved words. Linglass matches the dual subtitles and translation, and adds per-word pronunciation audio, phonetic transcription, and built-in flashcards with spaced repetition — no Anki setup required.
  
   * Trancy: Supports bilingual subtitles on YouTube, Netflix, and many other video platforms, plus GPT-based grammar analysis and a mobile app. Linglass takes a more focused approach than Trancy — YouTube and Netflix only — with a free tier that includes built-in flashcards, contextual translation, AI grammar explanations, and a clean, distraction-free subtitle interface.
  
   * Migaku: Known for deep Anki integration and strong support for Japanese learners, with a paid subscription and a mobile app. Linglass takes a simpler path — flashcards are built in (no Anki setup needed), there is a free tier, and the same toolset works across 22 languages.
  
   * Lingopie: A streaming service with its own content library and bilingual subtitles. Linglass is a browser extension you bring to the YouTube and Netflix content you already watch — no separate subscription, no platform lock-in.
  
  If you've tried Language Reactor, Trancy, Migaku, or Lingopie and want a lighter, more focused alternative — Linglass gives you a complete loop for learning vocabulary on YouTube and Netflix: watch, translate, save, review, plus AI grammar explanations — not just dual subtitles.
  
  🌍 Supported Languages
  
  English, Russian, German, Spanish, French, Italian, Portuguese (Brazil and Portugal), Japanese, Korean, Chinese (Simplified and Traditional), Thai, Vietnamese, Indonesian, Turkish, Polish, Hindi, Arabic, Swedish, Dutch, and Czech.
  
  Free to use with daily limits. Premium removes all limits.
  
  💬 Contact Us
  
  - Website: https://linglass.app
  - Support: [email protected]

• May 29, 2026
  host_permissions

  https://api.linglass.app/*, https://www.youtube.com/*, https://www.netflix.com/*

  https://api.linglass.app/*, https://www.youtube.com/*, https://www.netflix.com/*, https://www.google-analytics.com/*

• May 29, 2026
  permissions

  storage, identity, alarms, tabCapture, offscreen

  storage, identity, alarms

• May 13, 2026
  description

  Linglass provides dual subtitles on YouTube, contextual translation for words and phrases, and smart flashcards with spaced repetition.
  
  Learning a new language doesn't have to feel like studying. Linglass helps you pick up vocabulary naturally — by watching your favorite YouTube videos and browsing websites you already visit. Click any word to see its meaning in context, save it with one tap, and review it later with intelligent flashcards. The more you watch, the more you learn.
  
  📺 Dual Subtitles on YouTube
  
  - Original and translated subtitles displayed simultaneously
  - Click any word in subtitles for instant translation
  - Select phrases for contextual translation
  - Adjust subtitle font size and position
  
  🔍 Contextual Translation
  
  - Click any word — get meaning based on context, not just a dictionary entry
  - Select phrases for accurate multi-word translation
  - Phonetic transcription and native pronunciation
  - Save words and phrases to vocabulary with one click
  - Works in subtitles and on any webpage
  
  🧠 Smart Flashcards with FSRS
  
  - Spaced repetition adapts to your memory
  - Review with real video context — sentence, translation, and frame
  - Track your learning progress and streaks
  
  🌐 Translate Anywhere on the Web
  
  - Select any word on any website for instant translation
  - Wikipedia, news, blogs, articles — learn while browsing
  - Same contextual translation as in YouTube subtitles
  
  🌍 Supported Languages
  
  English, German, French, Spanish, Italian, Portuguese, Japanese, Korean, Chinese, Russian, Thai, Vietnamese, Indonesian, and more.
  
  Free to use with daily limits. Premium removes all restrictions.
  
  💬 Contact Us
  
  - Website: https://linglass.app
  - Support: [email protected]

  Linglass provides dual subtitles on YouTube and Netflix, contextual translation for words and phrases, and smart flashcards with spaced repetition.
  
  Learning a new language doesn't have to feel like studying. Linglass helps you pick up vocabulary naturally — by watching your favorite YouTube videos and browsing websites you already visit. Click any word to see its meaning in context, save it with one tap, and review it later with intelligent flashcards. The more you watch, the more you learn.
  
  📺 Dual Subtitles on YouTube and Netflix
  
  - Original and translated subtitles displayed simultaneously
  - Click any word in subtitles for instant translation
  - Select phrases for contextual translation
  - Adjust subtitle font size and position
  - Works on both YouTube and Netflix
  
  🎬 Netflix Support
  
  - Dual subtitles for Netflix shows and movies
  - Click any word in Netflix subtitles for instant contextual translation
  - Save vocabulary from Netflix scenes to your flashcards with one click
  - Cover art and scene context automatically attached to saved cards
  - Works with all text-based Netflix subtitle tracks
  
  🔍 Contextual Translation
  
  - Click any word — get meaning based on context, not just a dictionary entry
  - Select phrases for accurate multi-word translation
  - Phonetic transcription and native pronunciation
  - Save words and phrases to vocabulary with one click
  - Works in subtitles and on any webpage
  
  🧠 Smart Flashcards with FSRS
  
  - Spaced repetition adapts to your memory
  - Review with real video context — sentence, translation, and frame
  - Track your learning progress and streaks
  
  🌐 Translate Anywhere on the Web
  
  - Select any word on any website for instant translation
  - Wikipedia, news, blogs, articles — learn while browsing
  - Same contextual translation as in YouTube subtitles
  
  ⚖️ Comparison with Other Extensions
  
  How Linglass compares to popular subtitle extensions:
  
   * Language Reactor (a.k.a. "Language Learning with Netflix"): Offers dual subtitles on YouTube and Netflix with a click-to-translate dictionary and Anki export for saved words. Linglass matches the dual subtitles and translation, and adds per-word pronunciation audio, phonetic transcription, and built-in flashcards with spaced repetition — no Anki setup required.
  
   * Trancy: Supports bilingual subtitles on YouTube, Netflix, and many other video platforms, plus GPT-based grammar analysis and a mobile app. Linglass takes a more focused approach — YouTube and Netflix only — with a free tier that includes built-in flashcards, contextual translation, and a clean, distraction-free subtitle interface.
  
   * Migaku: Known for deep Anki integration and strong support for Japanese learners, with a paid subscription and a mobile app. Linglass takes a simpler path — flashcards are built in (no Anki setup needed), there is a free tier, and the same toolset works across 22 languages.
  
   * Lingopie: A streaming service with its own content library and bilingual subtitles. Linglass is a browser extension you bring to the YouTube and Netflix content you already watch — no separate subscription, no platform lock-in.
  
  A complete loop for learning vocabulary — watch, translate, save, review — not just dual subtitles.
  
  🌍 Supported Languages
  
  English, Russian, German, Spanish, French, Italian, Portuguese (Brazil and Portugal), Japanese, Korean, Chinese (Simplified and Traditional), Thai, Vietnamese, Indonesian, Turkish, Polish, Hindi, Arabic, Swedish, Dutch, and Czech.
  
  Free to use with daily limits. Premium removes all limits.
  
  💬 Contact Us
  
  - Website: https://linglass.app
  - Support: [email protected]

• May 13, 2026
  short_description

  YouTube subtitle translator with vocabulary flashcards. Instant contextual translation anywhere and spaced repetition.

  Learn languages from YouTube and Netflix. Dual subtitles, click any word to translate, save vocabulary with smart flashcards.

• May 13, 2026
  name

  Linglass — Learn Languages with Videos

  Linglass — Learn Languages with YouTube & Netflix

• May 13, 2026
  host_permissions

  https://api.linglass.app/*, https://www.youtube.com/*

  https://api.linglass.app/*, https://www.youtube.com/*, https://www.netflix.com/*

• Apr 24, 2026
  description

  Learn languages naturally while watching YouTube videos and browsing the web.
  
  DUAL SUBTITLES
  Watch YouTube with original and translated subtitles displayed simultaneously. Follow along in both languages as you watch your favorite content.
  
  INSTANT TRANSLATION
  Click any word in subtitles or select text on any webpage to get an instant translation with pronunciation. Works everywhere — YouTube, articles, blogs, Wikipedia.
  
  SAVE WORDS WITH CONTEXT
  Save new words along with the video frame, original sentence, and translation. Build a personal vocabulary collection with real media context.
  
  SMART FLASHCARDS
  Review saved words using spaced repetition. The algorithm adapts to your learning pace — words you struggle with appear more often, easy ones less frequently.
  
  TEXT-TO-SPEECH
  Listen to native pronunciation for any word or phrase. Improve your listening skills and accent naturally.
  
  SUPPORTED LANGUAGES
  English, German, French, Spanish, Japanese, Korean, Chinese, Russian.

  Linglass provides dual subtitles on YouTube, contextual translation for words and phrases, and smart flashcards with spaced repetition.
  
  Learning a new language doesn't have to feel like studying. Linglass helps you pick up vocabulary naturally — by watching your favorite YouTube videos and browsing websites you already visit. Click any word to see its meaning in context, save it with one tap, and review it later with intelligent flashcards. The more you watch, the more you learn.
  
  📺 Dual Subtitles on YouTube
  
  - Original and translated subtitles displayed simultaneously
  - Click any word in subtitles for instant translation
  - Select phrases for contextual translation
  - Adjust subtitle font size and position
  
  🔍 Contextual Translation
  
  - Click any word — get meaning based on context, not just a dictionary entry
  - Select phrases for accurate multi-word translation
  - Phonetic transcription and native pronunciation
  - Save words and phrases to vocabulary with one click
  - Works in subtitles and on any webpage
  
  🧠 Smart Flashcards with FSRS
  
  - Spaced repetition adapts to your memory
  - Review with real video context — sentence, translation, and frame
  - Track your learning progress and streaks
  
  🌐 Translate Anywhere on the Web
  
  - Select any word on any website for instant translation
  - Wikipedia, news, blogs, articles — learn while browsing
  - Same contextual translation as in YouTube subtitles
  
  🌍 Supported Languages
  
  English, German, French, Spanish, Italian, Portuguese, Japanese, Korean, Chinese, Russian, Thai, Vietnamese, Indonesian, and more.
  
  Free to use with daily limits. Premium removes all restrictions.
  
  💬 Contact Us
  
  - Website: https://linglass.app
  - Support: [email protected]

• Apr 24, 2026
  short_description

  Learn languages while watching YouTube with dual subtitles and instant translation

  YouTube subtitle translator with vocabulary flashcards. Instant contextual translation anywhere and spaced repetition.

Permissions & access

Permissions

storageidentityalarms

Host access

https://api.linglass.app/*, https://www.youtube.com/*, https://www.netflix.com/*, https://www.google-analytics.com/*

Screenshots