WordByWord

WordByWord helps you learn languages while reading on the web, PDFs, and YouTube. You can highlight any word or phrase to translate it, save vocabulary into collections, and study with smart flashcards and an AI trainer. It tracks your progress from unknown to mastered and lets you discover public collections curated by the community. It supports 50+ languages, offers voiceover and pronunciation, and lets you import and export vocabulary for flexible study across content.