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Explain PDF

Upload a PDF and get a plain-language AI explanation of what it says. Text is extracted in your browser, then sent to PDFly's server, which forwards it to Google Gemini for the explanation.

Last Updated: August 2026Written by Ayaz

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A note on privacy

PDFly extracts the PDF text in your browser. To generate the explanation, that extracted text is sent to PDFly's server, which forwards it to Google Gemini. The original PDF file is not uploaded; see the Privacy page for current data-handling details.

What is PDF explanation?

PDF explanation uses AI to read your document and explain it in plain language. It breaks down complex concepts, summarizes key points, and presents the information in a way that's easy to understand.

How it works

  1. Open PDFly's Explain PDF tool.
  2. Upload your PDF.
  3. The extracted text is sent to PDFly's server, which forwards it to Google Gemini to generate the explanation.
  4. You get a clear, plain-language explanation of what the document is about.

When to use Explain PDF

  • Research: Quickly understand academic papers.
  • Legal: Get a plain-English explanation of legal documents.
  • Technical: Understand technical specifications and manuals.
  • Education: Study complex topics more easily.

Limitations

  • The extracted document text is capped at 40,000 characters (roughly 10,000 tokens). Longer documents are automatically truncated to the 40,000-character limit before the explanation is generated.
  • The explanation is generated from the document text only — it will not cover anything beyond that character limit.

Need to understand a complex PDF?

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Frequently Asked Questions

How accurate is the explanation?

The AI explains based only on your document's content, but AI-generated explanations can still contain errors or miss context. For critical documents, always verify against the original.

Can I use this for legal documents?

It can help you understand legal documents, but it's not a substitute for professional legal advice.

Does it work with scanned PDFs?

If the PDF has text (not just images), it works. For scanned documents, OCR first.

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