KoruPDF
The reading tool built for language learners.
Smart Annotations
Words you might not know are subtly underlined. Hover to see the meaning appear above the word, inline, without interrupting your reading flow. No popups, no clicking, no waiting.
Click to Look Up
Click any word for the full picture — definition, pronunciation, example sentences, and an AI explanation of why that word is used in this specific context.
Vocabulary Tracking
Saved words follow you across documents. Watch your mastery level grow as you encounter them again — and export to Anki or CSV anytime.
