PDF.ai is an ultimate ChatPDF app that allows users to chat with any PDF document. It provides the ability to ask questions, obtain summaries, and easily find any information needed.The features of PDF.ai include the ability to chat with PDF documents, ask questions about PDF content, obtain summaries of PDF documents, and efficiently search for desired information in PDFs.There are several use cases for this AI tool. Students can use PDF.ai to quickly find answers to questions or obtain summaries of assigned reading materials. Professionals can use PDF.ai to search for specific information in large documents or ask questions to clarify any doubts. Researchers can use PDF.ai to extract key information and summaries from academic papers or research documents. Readers can use PDF.ai to explore and search through books or articles in PDF format.To use PDF.ai, follow these steps:1. Upload your PDF document.2. Start a chat session with your document.3. Ask questions or input keywords to search for specific information.4. Receive instant responses, summaries, or search results.