ChatPDF

ChatPDF is a free AI chat tool that lets you upload PDFs and ask questions with cited answers. It supports PDFs, videos, and websites, with features like built-in citations linking to source pages, multi-file chats for organizing and conversing with several documents, summarization, translation, and side-by-side PDF and chat view. Works in any language, accessible on desktop and mobile, and requires no sign-up for basic use. Over 10 million users, answering 1 million+ questions daily. Ideal for researchers, students, and professionals extracting insights from papers, reports, or contracts.