WordByWord – Translate, Save & Learn

Translate text, PDFs and YouTube subtitles. Save words and study with adaptive flashcards and trainers.

Turn every page and YouTube video into a language lesson. With WordByWord, highlight text on websites or PDFs to translate instantly, save words to your vocabulary, add your own meanings, and reinforce knowledge with adaptive flashcards! Use YouTube to learn languages — translate and save words or phrases directly in the player. Hover over subtitles to auto-pause, see full-sentence context, and save vocabulary in seconds. Hear clear pronunciation, review on desktop or mobile with flashcards, and make language learning part of everything you browse. 🌍 WEB & PDF TRANSLATION • Highlight text on any website or PDF for an instant translation • Add your own definitions for deeper understanding • Don’t worry about examples — we automatically save a sentence from the context where the word was found 📺 YouTube LEARNING • Translate and save words or phrases directly in the player • Auto-pause on hover so you never miss a subtitle • Full-sentence display to understand context 🃏 FlashCards YOUR WAY • Full control over your collections — you decide what to include in your sets • Set knowledge status for each word to track progress • Hide terms or definitions, choose voice (male/female), mark your knowledge level • Listen in different modes to strengthen pronunciation and memory ⚡ BUILT FOR CONSISTENCY • 50+ languages supported • Desktop + mobile-friendly review for learning anywhere ✅ Install, highlight text, save to vocabulary, and review with flashcards — WordByWord streamlines the path from discovery to retention. Learn the language — Word By Word!