ChatPDF

ChatPDF brings ChatGPT-style conversational AI to documents. Users upload a PDF (and other supported formats such as Word, PowerPoint, Markdown, and text files), then ask questions or request summaries. Responses include citations linked to the original PDF content, shown in a side-by-side view with the document. Users can organize files into folders and chat across multiple PDFs in one conversation. The page states that ChatPDF accepts documents in any language and can chat in any language. A free plan allows analysis of 2 documents per day, and a ChatPDF Plus plan is described as offering unlimited document analysis and more advanced features. The page also lists related tools including AI Writer, AI Detector, YouTube Chat, Research, Flashcards, and Slides, and states that a free account is not required to start but unlocks saved history and multi-document chats.

Key features

• Chat with PDFs using conversational AI
• Summarize PDFs
• Built-in citations linked to PDF references
• Side-by-side view of chat and PDF
• Multi-file chats organized in folders
• Support for multiple languages and documents in any language
• Support for Word, PowerPoint, Markdown, and text files
• Translate PDFs
• Secure link sharing for specific PDFs
• Desktop app and mobile app
• Web browser access on any device

Best suited for

• Researchers reading scientific papers and academic articles
• Students studying for exams and getting homework help
• Professionals reviewing legal contracts, financial reports, manuals, and training material

Pricing

Free plan allows analysis of 2 documents per day; ChatPDF Plus plan offers unlimited document analysis and more advanced features (price not stated on the website)