VideoDict - Learn While You Watch

AI dictionary for videos. Click subtitles to get instant explanations. Learn new concepts while watching YouTube, Bilibili, and Vimeo video. How It Works 1. Watch any YouTube video with subtitles 2. Click the VideoDict button in the player controls 3. Video pauses and captures the current subtitle text 4. Get instant AI-powered explanations of terms and concepts 5. Copy definitions or explore related terms (Pro) 6. Supports YouTube, Bilibili, and Vimeo. Key Features - Instant Definitions: Click to explain any term from YouTube subtitles - AI-Powered: Uses advanced language models for accurate explanations - Side Panel View: Clean, distraction-free interface - Copy to Clipboard: Save definitions for later review - Multiple AI Providers: Supports DeepSeek, OpenRouter, and OpenAI-compatible APIs - Privacy First: Your API key stays local, never sent to our servers Perfect For - Language learners watching educational content - Students studying technical subjects on YouTube - Anyone encountering unfamiliar terminology in videos - Educational content creators and researchers v1.0.3 - Added welcome setup: new users are now guided to the settings page on first install to configure their API key