Best AI Tools to Chat with PDFs
This list is for students, researchers, lawyers and office workers who want to ask questions about long PDFs instead of reading every page. When choosing, check whether answers point back to the exact page or passage, how many files you can upload at once, and whether the tool handles scanned documents. Also think about privacy if your files are sensitive. Free and freemium tools are marked so you can test them with a real document first.
Free to start: ChatPDF, NotebookLM, Humata, DeepPDF, Converse
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Why it's here: Chat with any PDF or file to get summaries and answers, plus support for YouTube and websites on desktop and mobile.
Chat with any PDF, file, video or website to get summaries and answers to your questions about the content.
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Why it's here: A free Google assistant that analyses your uploaded sources and explains complex topics from them.
NotebookLM, now presented as Gemini Notebook, is Google's AI research assistant that studies your sources and helps make complex material easier to understand.
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Why it's here: Asks questions across many files at once and gives cited answers, summaries and comparisons for heavy document work.
An AI document assistant that turns your files into a searchable knowledge base for summaries, comparisons and cited answers.
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Why it's here: A free PDF assistant for chatting with documents, summarising, side-by-side translation and converting files.
An AI PDF assistant for chatting with documents, summarising, translating side by side and converting files to other formats.
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Why it's here: Lets you chat with any PDF for answers and summaries, and offers an API for parsing and extracting document data.
An AI tool for chatting with PDFs to get answers and summaries, plus an API to parse, extract and split documents.
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Why it's here: A reading companion that saves articles, PDFs and videos so you can chat with them and get quick summaries.
An AI reading companion that saves, summarises and lets you chat with web articles, PDFs and YouTube videos.
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Why it's here: A free tool that lets you ask questions about PDFs, sheets and slides by speaking instead of typing.
A voice AI tool that lets you upload any document and ask questions about it by speaking naturally.
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Why it's here: Built for legal and professional work: chat across document folders, extract data and review contracts, with automatic OCR.
AI document platform for legal and professional work that lets you chat across files, extract data and summarise documents.
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Why it's here: A free shared workspace where teams can chat with PDFs, DOCX files and sheets using shared prompts and agents.
A shared AI workspace for teams with prompt libraries, shared agents and document chat, without managing API keys or models.
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Why it's here: An AI tutor that answers study questions from uploaded PDFs, documents and images with personalised explanations.
An AI tutor that answers study questions across subjects from geometry to history, with file uploads and expert help.
Frequently asked questions
How does chatting with a PDF work?
You upload a document, and the tool reads its text so you can ask questions in plain language. It then answers using content from the file, and many tools show which page or passage the answer came from.
Is it safe to upload private documents?
It depends on the provider's privacy policy. Avoid uploading sensitive personal, financial or confidential client documents unless you trust the service and have checked how it stores and uses files.
Can these tools read scanned PDFs?
Some tools include OCR, which reads text from scanned pages or images, while others only work with text-based PDFs. If your file is a scan, look for OCR support or convert it first.
Are there free tools to chat with PDFs?
Yes. Several tools on this list are free, and others offer free plans with limits on pages, file size or questions per day. Test with your own document to see which gives the clearest answers.
More lists
Plans and features change often; confirm on each tool's official website. Last updated September 24, 2026.
