Ask focused questions across your PDF documents

What is PDF.ai?

PDF.ai is a document question-and-answer service built around PDF files. A reader uploads material and asks for explanations, summaries, or specific information, then uses references to return to the source. The official documentation also describes querying multiple PDFs through an API. This is useful when a document is too long to navigate efficiently by scrolling, or when a small library contains related information that needs to be compared and checked.

Ask a question the document can answer

Begin with a narrow request, such as locating a definition or summarizing one section's argument. The chat-all API can draw from a library of uploaded PDFs and return references to source documents and pages; its options include tag filtering. A bounded document set makes it easier to understand which sources should support an answer.

Use references to verify the interpretation

Open the cited passage and read enough surrounding text to catch qualifications, exceptions, and definitions. For tables, verify the row, column, and unit directly. If the document is scanned or has a complicated layout, check that text extraction has preserved the content before relying on a summary. Save important findings together with the page location so they remain useful outside the chat.

Features to explore

• PDF questions and summaries
• Source-oriented document reading
• Multi-document API queries
• Document and page references

Who is PDF.ai for?

Best for researchers, students, and professionals reading long reports or a focused collection of PDFs. It is most helpful when the reader wants to find and understand source passages while remaining able to inspect the originals.

Before you get started

Check answers against the referenced pages, especially for tables, scans, and complex layouts. Review upload privacy and plan limits before adding confidential documents; a fluent summary can still omit an important qualification.