Sublern — AI Translate Words in Video Subtitles by Vasili Korol

Sublern — AI-Powered Translation for Video Subtitles

Watch videos on any site and instantly translate unfamiliar words using AI without switching tabs.

Sublern is a convenient AI-powered video translator that turns watching movies, series, and clips into an effective way to learn foreign languages. Simply hover your cursor over any word in the subtitles — and you will see the AI-generated translation, usage examples, and be able to listen to the correct pronunciation. Everything works right on top of the video, without distracting you from watching.

🎯 Why do you need Sublern?

AI-powered word translation in videos is the main function of the extension. But it's not just a dictionary. Sublern helps you learn languages, turning your favorite videos into personalized lessons powered by artificial intelligence. Subtitles become interactive — any word can be translated with one mouse movement.

✨ How does it work?

1. Open any video on your favorite site.
2. Hover your cursor over a word in the subtitles.
3. An AI-powered dictionary instantly appears — translation, examples, and a pronunciation button.
4. Move the cursor away — the window disappears, and you continue watching.

📚 Personal vocabulary manager

Save words you want to learn to your personal dictionary. Track your progress by changing word status (New / Learning / Learned). Export your vocabulary to CSV or import existing word lists. Your personal collection grows with every video you watch.

⌨️ Keyboard shortcuts

Control everything with hotkeys: toggle subtitles on/off, pause translation on hover, show alternative translations, enable usage examples, and turn pronunciation on/off — all without touching your mouse.

📚 Learning languages through video — a new level

Learning languages through video with Sublern happens naturally and without stress. You watch interesting content, and the AI-powered extension helps you understand unfamiliar words. Context and examples reinforce new words in memory much more effectively than rote memorization.

Works on any site

Sublern works on any site with video and text subtitles — from popular streaming platforms to educational websites. Learn languages while watching your favorite content.

🔊 Pronunciation and examples

Each AI-generated translation includes:
• Accurate translation of the word in context
• Usage examples in real phrases
• Pronunciation button to hear native speakers

🌍 Translation languages

Translate words from English to Russian, Spanish, French, German, Italian, Portuguese, Japanese, Chinese, Korean, and other languages. The translation language can be set with one click.

⚡ Why Sublern is the best choice

Traditional way: Stop the video, select and copy the word, open a new tab, paste into a translator, miss the moment.

Sublern: Video continues, just hover your cursor, translation right on the video, instant result, miss nothing.

🔧 Settings to customize

• On/Off — toolbar button for quick activation
• Translation language selection — from the dropdown menu
• Auto-play — enable or disable pronunciation

❓ Frequently Asked Questions

Which sites support subtitle translation?
All sites with text subtitles, including streaming platforms, educational websites, and video sharing services.

Does the extension slow down video?
No. Sublern uses local processing in your browser and does not affect loading or playback speed.

Do I need to register?
No. Install and use immediately.

📌 Important note

All mentioned services are trademarks of their respective owners. Sublern is not affiliated with, endorsed by, or sponsored by any third-party platforms.

💬 We value your opinion

We hope Sublern makes learning languages through video engaging and productive. If you like the extension — please rate it. This will help other language learners find a video translator that actually works.

Send your ideas and suggestions in the reviews. Together we will make Sublern even better!

Learn languages, watch your favorite videos, and expand your horizons with Sublern! 🎓🎬