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Drop in any document you want to understand, a contract, report, manual, or paper.
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AI replies in seconds with clear answers and points you to the exact source page.
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research-paper.pdf
The AI PDF chat people
actually trust
Ask anything and get answers grounded in your document. Everything you need to chat with PDFs using AI.
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Skip the scrolling. Ask a question in plain language and get a clear answer in seconds.
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Real comprehension
Our AI reads and understands your whole document, so answers reflect what it actually says.
Answers with sources
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Every answer points to the page it came from, so you can check the source in one click.
Works on any document
Contracts to research
Chat with contracts, reports, manuals, research papers, or study notes, whatever you upload.
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Your files are encrypted in transit and processed securely. We never share your documents.
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Trusted every day,
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See what people are saying about chatting with PDFs on lumr.
TrustScore 4.6 · Based on 3,247 reviews
“I ask my contracts where the renewal terms are and get the answer with the page number instantly.”
Sarah M.
Contracts Specialist
“I chat with research papers to find the method and results fast. It even cites the page every time.”
James K.
PhD Candidate
“Instead of reading a 60 page manual, I just ask my questions and get straight answers. Brilliant.”
Ana L.
Small Business Owner
We answer
your questions
Everything you need to know about chatting with your PDFs using AI.
Answers are grounded in your document and cite the source page so you can verify them. For critical decisions we always recommend checking the cited pages.
Yes. Every answer points to the page in your document it was based on, so you can confirm the source in one click.
You can chat with everything from a single page to lengthy documents of hundreds of pages. You can upload PDF files up to 100 MB.
Absolutely. Your files are encrypted with AES during transfer and processed securely. We follow GDPR best practices and never share your documents with third parties.
You can upload PDF files up to 100 MB. For most documents this is more than enough.
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