What ChatPDF does
ChatPDF lets you upload a PDF or other document and ask questions about it, with answers that cite the passage they came from. It shows the chat and the document side by side, can summarize, translate and compare files, and supports folders with several documents. Besides PDF it accepts Word, PowerPoint, Markdown and text files, and you can chat in any language. Free use allows two documents a day.
Best for
- Students reading papers and textbooks
- Quick answers from contracts or manuals
- Comparing several documents at once
- Asking questions in a different language from the document
Key features
Cited answers
Replies point to the part of the document they came from.
Side-by-side view
Read the document and the chat together.
Multi-file folders
Chat across several documents organized in folders.
Many file types
Accepts PDF, Word, PowerPoint, Markdown and text files.
Any language
Upload documents in any language and ask questions in another.
Shareable links
Share a specific PDF chat by link and revoke access later.
ChatPDF pricing
ChatPDF has a free plan. Analyze up to 2 documents per day; an account adds saved history and multi-document chats. Paid plans start at €16.99/month. Prices were shown in euros when checked from Europe; prices in other regions may differ. Prices appear in the Plus upgrade panel; there is no separate pricing page. Prices checked on the official site on Nov 9, 2026.
| Free | €0 | |
|---|---|---|
| Plus | €16.99/month | €8.25/month billed yearly; unlimited PDFs and questions, 2,000 pages per PDF |
Source: ChatPDF pricing page
Pros and cons
What it does well
- Core features work without creating an account.
- Answers include citations to the source text.
- Accepts several file types beyond PDF.
Know before you sign up
- The free plan is limited to 2 documents per day.
- Plus caps files at 2,000 pages and folders at 50 PDFs.
- File size limits are lower on the free plan.
Alternatives to ChatPDF
HumataAsk questions across an internal knowledge base.
SciSpaceSearch papers and work with research PDFs.
ConsensusSearch academic papers with AI support.
ElicitFind papers and assemble cited research briefs.
PerplexityAsk questions and follow cited sources into deeper research.
ResearchRabbitExplore connections between academic papers.
Questions about ChatPDF
What is ChatPDF?
ChatPDF lets you upload a PDF or other document and ask questions about it, with answers that cite the passage they came from. It shows the chat and the document side by side, can summarize, translate and compare files, and supports folders with several documents. Besides PDF it accepts Word, PowerPoint, Markdown and text files, and you can chat in any language. Free use allows two documents a day.
Is ChatPDF free?
ChatPDF has a free plan. Analyze up to 2 documents per day; an account adds saved history and multi-document chats. Paid plans start at €16.99/month. Prices were shown in euros when checked from Europe; prices in other regions may differ. Prices appear in the Plus upgrade panel; there is no separate pricing page. Prices checked on the official site on Nov 9, 2026.
How much does ChatPDF cost?
Paid plans start at €16.99/month; plans listed on the official pricing page: Free (€0), Plus (€16.99/month). Prices were shown in euros when checked from Europe; prices in other regions may differ. Prices appear in the Plus upgrade panel; there is no separate pricing page.
Who is ChatPDF best for?
Students reading papers and textbooks, Quick answers from contracts or manuals, Comparing several documents at once and Asking questions in a different language from the document.
Where can I use ChatPDF?
ChatPDF is available on Web and API, according to its official site.
What are some alternatives to ChatPDF?
Similar research tools include Humata, SciSpace, Consensus and Elicit. Compare them on the Research page.