Duplibot
Guide

How to summarise a long PDF with AI

Upload the PDF, ask the right question and check the answer. Here is the method, with prompts.

Updated 8 October 2026 · 1 min read

Reading a 50-page report the night before a meeting is no fun. AI can give you the main points in a minute, as long as you ask well and check what matters.

Step 1: upload the PDF

In Duplibot, press the paperclip and choose your PDF (up to 20 MB). Word, PowerPoint and Excel files work too. The text is read once and reused for follow-up questions.

Scanned PDFs (photos of pages) may have no text to read. If the AI says it cannot find text, try a PDF with selectable text.

Step 2: ask for the summary you need

Be specific about who the summary is for:

Summarise this report for a busy manager: one paragraph, then the five most important findings with page numbers if possible.

Other useful prompts:

  • "List every number and statistic in this document in a table."
  • "What does this paper conclude, and what evidence does it give?"
  • "Explain chapter 3 in simple Bangla."
  • "What questions should I ask the author?"

Step 3: ask follow-up questions

Keep chatting about the same file: "What does it say about costs?", "Is there anything about Bangladesh?" This is often more useful than one long summary.

Step 4: check what matters

AI summaries are usually good but can miss details or misread tables. For anything important (numbers, legal points, quotes), check the original page.

Which model to use

  • Haiku: short documents and simple summaries.
  • Sonnet: long reports, research papers and anything with tables.
  • Opus: dense legal or technical documents where every detail counts.

Save the result

Ask "Turn this summary into a one-page document" and export it to Word or PDF from the document panel.

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