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Textbook & Lecture Notes Summarizer

Turn a textbook chapter, a lecture handout or a course PDF into revision notes you can actually study from — key concepts with one-line definitions, the formulas, dates and names to remember, how the ideas connect, and three questions to test yourself.

Key facts
  • Output is revision notes, not a generic summary: concepts, definitions, formulas, dates, names, links between ideas.
  • Ends with 3 self-test questions to check what you remember.
  • Works on textbook chapters, lecture notes, course handouts and exported slides.
  • Ask the document to explain a concept again, more simply, or with an example from the text.
  • Free, no account; summarize in your study language.
Updated By the PDF Summarizer team

Drop a PDF here or click to browse

Up to 20 MB · 300 pages · scanned PDFs OK · no sign-up

Your PDF is deleted right after text extraction. Nothing is used to train AI.

What you get

Studying from a summary only works if it keeps what an exam asks for. With the Course / textbook type, the output is organised as revision notes:

  • Key concepts, each with a one-line definition taken from the text.
  • Formulas, dates, names and numbers that are likely to be asked.
  • How the ideas connect — cause and effect, steps of a process, comparisons.
  • Three self-test questions at the end.

How to turn a chapter into revision notes

  1. Upload one chapter or one lectureSmaller units give sharper notes than a whole textbook at once.
  2. Keep “Course / textbook” selectedBullet points are preselected on this page; choose Detailed for dense chapters.
  3. Read the notes, then answer the self-test questionsWithout looking first: this is where learning happens.
  4. Ask for explanations“Explain the difference between mitosis and meiosis as it is described here”, “Give the example the chapter uses for elasticity”.
  5. Download the notesSave them as Markdown into your notes app or flashcard tool.

Study techniques that work with it

  • Summarize after reading, not instead of reading. Read the chapter once quickly, then use the notes to review — comparing your memory with the notes is the most effective step.
  • Turn self-test questions into flashcards. Ask for ten more questions in the Q&A tab: “Give me 10 exam-style questions on this chapter with answers and pages.”
  • Explain it back. Ask the tool to check your explanation: “Is this a correct summary of section 2: …?”.
  • Review the cited pages for anything you got wrong.
Exam next week?Upload your first chapter and get revision notes with self-test questions.
Summarize a PDF now →

Limits

Diagrams, chemical structures and handwritten annotations are not read. Formulas are extracted as text and can lose their layout — check them in the original. Notes are as good as the source: if your lecture slides contain only keywords, ask questions about the related textbook chapter instead.

Frequently asked questions

Can it summarize lecture slides?

Yes. Slides exported to PDF work; for decks with very little text, the slide-deck summarizer reconstructs the storyline instead.

Can it create flashcards?

Ask in the Q&A tab for question-and-answer pairs from the chapter, then copy them into your flashcard app.

Is it allowed to use this for studying?

Using summaries to review is a normal study practice. Submitting AI-generated text as your own work may break your school's rules — use the notes to learn, and write assignments yourself.

Can it explain difficult passages?

Yes. Ask “Explain the passage on page 34 in simpler words” — the answer is based on the chapter's own content.

Does it work in my language?

Courses in any common language can be summarized, and the notes can be written in any of 20 output languages.

Written by the PDF Summarizer team, who build and run the extraction and summarization pipeline behind this site. We test every method described here on real documents. Last reviewed October 19, 2026. Found an error? Tell us.