CognitIO goes beyond basic PDF summarization by converting your documents into an active learning environment. Upload any PDF and get structured summaries, AI-generated flashcards, and auto-built practice tests — all derived directly from your content. The built-in chat lets you ask specific questions about the document and get precise answers, making it useful for studying textbooks, research papers, lecture notes, or any dense material. Designed for students who need to retain information, not just skim it. Free to try with no credit card required.