ChatPDF
ChatPDF lets you upload a PDF and ask questions about it, with cited answers, summaries, multi-file chats and support for documents in any language.
About this tool
ChatPDF is one of the earliest and simplest document chat tools. You upload a PDF, and an AI model reads it so you can ask questions, request a summary or compare sections in conversation. Answers include citations that point back to the relevant passages, which makes it easier to check the response instead of searching page by page.
The service now handles more than PDFs, including other files, videos and websites, and lets you group documents in folders and question several at once. It accepts documents in any language and can answer in a different language from the source. Typical users are students preparing for exams, researchers scanning papers, and professionals reviewing contracts, reports or manuals.
What you can do
Cited answers
Responses link back to the passages in the document they are based on, so you can verify them.
Multi-document chat
Folders let you organise files and ask questions across several PDFs in a single conversation.
Any language
Upload documents in one language and ask or receive answers in another.
Beyond PDFs
ChatPDF also accepts other file types, videos and websites as sources for chat.
Who is it for?
- A student asks for a summary of each chapter in a long textbook PDF.
- A researcher compares the methods sections of several papers in one chat.
- A small business owner checks the termination clauses of a supplier contract.
Before you choose
AI answers can misread tables or scanned pages; use the citations to confirm important details, especially in legal or financial documents.
Do not upload confidential documents without checking ChatPDF’s data retention and privacy terms.
Frequently asked questions
Is ChatPDF free?
Yes. The free plan lets you analyse two documents per day. ChatPDF Plus raises the limits and adds more advanced features.
Do I need an account to use ChatPDF?
No sign-up is needed to try it, but creating a free account saves your chat history.
Can ChatPDF read documents in other languages?
Yes. Documents can be written in any language, and ChatPDF can reply in a language other than the one used in the file.
Check the official website for current features, pricing, and terms.
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