ChatPDF

An AI Q&A tool designed specifically for PDFs. Upload a PDF to get a summary instantly. You can ask questions and get page number citations. It supports chatting with multiple files simultaneously and any language. You can also interact with files, videos, and websites. It comes with supporting AI writing and detection tools.

AI Document Generator#Documents#PDF#Q&A

Updated: 2026-10-26

What is ChatPDF?

The official slogan of ChatPDF is "Your PDF AI – Like ChatGPT, but made for PDFs". It can generate summaries and answer questions for free. According to the official statement, it answers over 1 million questions per day and has more than 10 million users. In addition to PDFs, it now supports interacting with documents, videos or websites, and you can start by directly pasting text or links. It also provides supporting tools such as AI writing, AI detection, flashcards and slides, covering three typical scenarios: scientific research, learning and the workplace. It turns "reading documents" into "asking documents", suitable for materials with high information density that require repeated consultation, aiming to speed up the process of finding answers.

Who is it for?

Graduate students and researchers reading papers, professionals who need to quickly digest legal contracts and financial reports, as well as students preparing for exams and wanting to quickly go through materials; researchers who need to process a large number of English papers will particularly benefit.

Key features

Document Q&A

Upload a PDF and ask questions directly; the AI automatically generates summaries, quickly locates key information, saving you the time of reading the full text. It’s also ideal for having it outline the main points first before you decide which sections to read in detail.

Cite Sources

Answers are linked to the corresponding pages of the PDF, eliminating the need to flip through pages one by one and making it easy to return to the original text to verify the context.

Chat with Multiple Files

You can create folders to organize your files and chat with multiple PDFs simultaneously in a single conversation, which is ideal for comparing multiple documents.

Any Language

Accepts PDFs in any language and allows you to ask questions in any language, making cross-language document reading no longer require prior translation.

Chat with Files/Videos/Websites

The official version states that it supports conversing with file, video, and website content, and the form of research materials is no longer limited to PDF files.

Learning and Office Tools

Supporting features such as AI writing, AI detection, flashcard creation, and slide generation, it covers the entire workflow from reading materials to producing results.

Multi-device Support

Available as a Mac app and a mobile app. Sign up for free to save your chat history and continue using it on another device.

How to use ChatPDF

The citation function is the most practical part, but "citing to a specific page" does not mean the conclusion is necessarily accurate.
It is recommended to verify the key data against the original text.
If the scanned PDF has no text layer, the recognition quality will drop significantly.
It is necessary to perform OCR first before uploading.
Organizing materials in folders and comparing multiple documents in the same conversation is more efficient than opening them one by one.
For first-time use, it is recommended to upload a familiar document first to check whether its understanding of terms and formats meets expectations.

Things to know

The free version has limits on the number of files, the size of a single file, and the daily query quota. For in-depth use, you need to subscribe to a paid plan, and please confirm the quota before batch processing. Please evaluate the privacy risks before uploading sensitive or confidential documents; it is recommended to handle files involving trade secrets or personal privacy with caution, and perform desensitization if necessary. Please be patient when parsing long documents slowly, and split and upload chapters if necessary.