...Manage and save for later all your PDFs, EPUBs, and web pages in one place. Use tags, reading progress, and detailed document information to stay on top of your reading. Use the integrated reader to actively read, highlight, take notes, connect thoughts, and track progress with pagemarks. Build your detailed knowledge base with granular highlight tagging, and flashcards, directly from text highlights. Use the Polar Chrome extension to save web pages in your repository. Review your annotations and flashcards directly in Polar using our spaced repetition algorithms.