Can I chat with a PDF for free?

Yes. PdfGPT's free tier lets you upload a PDF and ask questions immediately, with 25 queries per month, 500 pages, and 5 deep research reports. No credit card, no signup required to test it.

Can ChatGPT read PDFs for free?

ChatGPT's free tier supports limited PDF uploads with a small context window — usually only the first few pages of larger documents. PdfGPT was built specifically for PDFs and reads the entire file regardless of length, with page citations on every answer.

What's the maximum PDF size I can chat with?

500 pages on the free tier. Paid plans handle up to 1,200 pages per document.

Do I need to sign up to chat with a PDF?

No. You can upload a PDF and ask questions immediately. Sign up only when you want to save your chats or upgrade to a paid plan.

How accurate are the answers when I chat with a PDF?

Every answer is grounded in the source PDF and cites the page where the information was found. PdfGPT explicitly tells you when an answer isn't supported by the document, which prevents the hallucinated responses common with general AI chatbots.

Can I chat with multiple PDFs at once?

Yes. Create a Research Project, upload several PDFs, and ask questions across all of them. This is useful for literature reviews, contract comparisons, and meta-analysis work.

Does PdfGPT work with scanned PDFs?

Yes. Scanned and image-based PDFs are automatically processed with OCR before answering questions.

What languages does PdfGPT support for chatting with PDFs?

PdfGPT supports 10 languages: English, Spanish, French, Italian, German, Arabic, Japanese, Korean, Portuguese, and Chinese. The PDF and your questions can be in any supported language.

Try for Free!

Chat with PDF — Ask Any Document, Get Instant Answers

Upload any PDF and ask questions in natural language. Get accurate answers grounded in your document, with the source page cited on every response. Works on textbooks, research papers, contracts, and reports up to 1,200 pages.

Upload your PDF to start chatting

Drag and drop your PDF, or click to upload.

Drag your file(s) to start chatting

Maximum File Size: 25 MB | Accepted Formats: PDF only

Used by professionals in Law, Academia, Research, Finance, and Education

Get answers from any PDF, instantly

PdfGPT lets you talk to your PDF like you would talk to a colleague who has read it. Ask any question and get an answer pulled from the actual document, with the source page referenced.

No more skimming, scrolling, or copy-pasting passages into another chatbot. Upload the file once and ask anything across all its pages.

Works on PDFs ChatGPT cannot handle: scanned documents, files over 100 pages, and multilingual content in 10 languages.

How to chat with a PDF in three steps

Upload, ask, get a cited answer

Step 1

Upload your PDF.Drag and drop any PDF up to 500 pages on the free tier. Scanned documents work too.

Step 2

Ask anything.Type a question in natural language. Try "summarize chapter 3", "what are the key findings", or "explain page 12 in plain English".

Step 3

Get a cited answer.Every reply quotes the page it came from. Click the citation to verify in the source. No hallucinations.

Start chatting for free

Built for chatting with PDFs

PdfGPT is grounded in your document, cites sources on every answer, and handles files ChatGPT cannot.

Page citations on every answer

Every reply includes the source page so you can verify the answer in seconds.

Chat across multiple PDFs

Upload several documents and ask questions that span all of them in Deep Research mode.

Grounded responses, no hallucinations

PdfGPT only answers from your document. If something is not in the PDF, it tells you instead of guessing.

Follow-up questions

Have a real conversation about your document. Ask clarifying questions and dig deeper without re-uploading.

OCR for scanned PDFs

Scanned class notes, photographed pages, and image-based PDFs are processed automatically.

Anytime, anywhere access

Browser-based, works on phone or laptop. Pick up your chat from any device.

Free tier with no credit card

25 chats per month, 500-page PDFs, 5 deep research reports. No login required to try.

Simple, no learning curve

No prompt engineering. Ask in plain English, Spanish, French, or any of our 10 supported languages.

Share your chat

Send a link to your conversation so teammates or classmates can see your Q&A and continue.

Secure and private

Documents are encrypted in transit and at rest. We never train models on your uploads.

Mobile-ready

Full chat experience on phone and tablet. Useful for studying on the go.

Export your chat

Save Q&A as PDF, Markdown, or Notion. Useful for research notes and audit trails.

Affordable Plans for Advanced AI Capabilities

Make the most of our free AI PDF Summarizer. For additional features, explore our budget-friendly plans.

Why chat with PDF instead of summarizing it?

Summaries are one-way. Chat lets you ask the question that actually matters for your task — and verify the answer.

Get exactly what you need

Skip the generic summary. Ask the specific question and get the specific answer, sourced from the page it came from.

Verify in one click

Citations on every answer mean you trust but verify. No wondering whether the AI made it up.

Conversational, not one-shot

Real research is iterative. Ask, refine, dig deeper. PdfGPT remembers context across the conversation.

PDFGPT ensures your file security and privacy with secure cloud storage and customizable deletion schedules. Free or Basic plan users get automatic deletion every seven days, while paid users can set their own schedule.

What people ask their PDFs

Real questions our users send to their documents every day.

Researchers ask methodology questions

"What dataset did the authors use?", "Summarize the limitations section", "List the cited references in chapter 4"

Students prep for exams

"Generate 10 practice questions from this chapter", "Define the key terms in plain English", "Compare these two textbooks"

Lawyers and finance pros review documents

"What are the termination clauses?", "Highlight any liability provisions", "What is the total revenue in Q3?"

Anyone with a long PDF saves time

"Summarize this 200-page policy", "Find every mention of compliance", "Translate page 14 into Spanish"

💜 Voices of the PdfGPT Community

Everything you should know about PdfGPT.

Sofia M

@JournoSofiaM

Just used PdfGPT for a story I’m working on and I’m blown away. I fed it interviews, reports, and a messy folder of background documents.

It didn’t just summarize, it cross-checked quotes from interviews against official reports and showed me where a key source contradicted themselves.

I asked it to validate a claim, and it pulled up recent, credible references without hallucinating.

This is the first AI tool I’ve used that actually respects accuracy. Journalists: this is the one.

22.4k

Jon Park

@LegalJonPark

Just reviewed a contract in half the time. PdfGPT flagged every conflict.

22.4k

Dr. Maya Ellington

Neuroscience Researcher

PdfGPT has become my default research companion. It connects insights across dozens of studies and even highlights methodological gaps I would have missed.

980 • 465 Comments

Jason Wu

Contract Specialist

The redline summaries PdfGPT produces are concise and accurate. Perfect for reviewing revisions.

679 • 653 Comments

Lucas Don

@LucasD_Data

If you’re a PhD student drowning in papers, PLEASE try PdfGPT. I spent months trying to piece together my literature review manually.

PdfGPT read everything! all 50 papers! and automatically grouped them into themes, highlighted contradictions, and even spotted duplicate citations across old notes I forgot about.

The note-taking feature + multi-document chat is insane. I can ask: “Which papers disagree with the main hypothesis?”

And it gives a clear, cited answer. This would’ve saved me an entire semester.

22.4k