CC Words - Translate & Vocabulary Builder

Select any text to translate, save to vocabulary, and review with spaced repetition flashcards. Works on all websites.

CC Words — Select, Translate, Learn Instantly translate any text on any website. Save words to your personal vocabulary and review them with spaced repetition flashcards. 🔤 TEXT SELECTION TRANSLATION • Select any word or phrase on any website to get instant translation • Supports all languages with automatic language detection • Pronunciation audio for both source and target languages • Detailed dictionary entries with parts of speech, definitions, and usage examples 📚 VOCABULARY BUILDER • One-click save to your personal word list • Automatically captures sentence context for better memorization • Records the source URL so you can revisit where you learned each word 🧠 SPACED REPETITION REVIEW • SM-2 algorithm schedules reviews at scientifically optimal intervals • Flashcard-based review system to reinforce memory • Track your learning progress with status: New → Learning → Mastered ☁️ CLOUD SYNC & ACCOUNT • Sign in with Google to sync vocabulary across devices • Access your words on youtube-cc.com for web-based review • Works offline — all data is stored locally first 🌐 WORKS EVERYWHERE • Supports all websites, not just YouTube • Dark mode and light mode auto-detection • Available in 12 languages: English, 简体中文, 繁體中文, 日本語, 한국어, हिन्दी, Español, Français, العربية, বাংলা, Português, Русский PRIVACY • No data collection — your vocabulary stays on your device • Cloud sync is optional and only activated when you sign in • Open source: https://github.com/nicepkg/youtube-cc Part of the CC Plus ecosystem. Use together with the CC Plus extension for interactive YouTube captions, bilingual subtitles, and more.