YouTube Dual Subtitles & Bilingual Translate

Display dual subtitles & bilingual captions on YouTube for any language! Real-time hover translation, audio replay & easy learning.

🎬 YouTube Dual Subtitles & Bilingual Translate Enjoy YouTube videos in any language with seamless dual subtitles and instant vocabulary translation! Built for global video viewers and language learners! Whether you are watching English speeches, Japanese anime/VTubers, Korean variety shows, or French/Spanish tutorials, enjoy smooth, high-definition bilingual subtitles with a single click! ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✨ Why Choose YouTube Dual Subtitles? ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🌟 1. Smooth Dual-Slot Display (No More Subtitle Jumping & Flashing) • Traditional auto-generated subtitles jump and jitter rapidly, causing eye strain. • Our custom dual-slot engine keeps the layout rock-solid: the upper slot holds the previous complete sentence, while the lower slot smoothly streams spoken words in real time. Enjoy a comfortable viewing experience just like TV broadcast captions! ⚡ 2. 60fps Zero-Delay Synchronization (Instant Seeking) • Powered by 60fps high-precision requestAnimationFrame synchronization, completely eliminating the sluggish 250ms subtitle lag of traditional extensions. • Scrubbing through the timeline is instant — subtitles always match the video frame-by-frame. 🧠 3. Smart Sentence Merging & Noise Purging • Automatically aggregates fragmented speech tokens into coherent, grammatically complete sentences. • Automatically cleans out [Music], [Laughter], [Applause], and >> speaker markers for a distraction-free screen. 🔍 4. Hover Word Lookup & Original Voice Replay (Powerful Learning Tool) • Highlight any word or phrase on subtitles to immediately reveal a glassmorphic dictionary definition and phonetic symbols. • Click "🎬 Play Snippet": The video automatically rewinds and precisely replays the speaker's original voice slice for authentic listening practice! • Click "🗣️ Speak": Reads words aloud with standard TTS audio synthesis. ⚡ 5. Shadowing Keyboard Shortcuts • [R]: Replay current sentence audio (automatically pauses at the end of the sentence for easy shadowing!). • [A]: Jump to the start of the previous subtitle. • [D]: Jump to the start of the next subtitle. 📱 6. Fully Compatible with YouTube Shorts Automatically detects Shorts vertical layout and dynamically positions subtitles to avoid blocking titles or interaction buttons. 🔒 7. 100% Privacy & Security Guaranteed Zero data tracking. We do not collect cookies, browsing history, or personal data. Purely local execution with Manifest V3 compliance. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ❓ Frequently Asked Questions (FAQ) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Q1: How do I enable dual subtitles? A1: Play any YouTube video and click the native "CC" button (or press 'C') at the bottom right. The dual subtitles will activate automatically! Q2: Which languages are supported? A2: Supports mutual translation between English, Traditional/Simplified Chinese, Japanese, Korean, Spanish, French, German, and more. Click the extension icon in the toolbar to change your target language at any time. Q3: Is it free to use? Do I need to create an account? A3: It is completely free with no registration required. Install and enjoy immediately!