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Turn any PDF into flashcards with AI

Upload a PDF, slides, notes or a photo of a page. DeckOwl reads the text and builds flashcards you can review with spaced repetition.

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How a PDF becomes a flashcard deck

Long textbook chapters are hard to reread efficiently, which is why many students look for an AI that makes flashcards from PDF files they already have. DeckOwl reads the text in your document, picks out the terms, definitions and facts that matter, and turns each one into a card with a clear question on the front and the answer on the back.

  • Keep each card to one idea so you can check your answer quickly.
  • Generate from your own chapter or lecture notes rather than a generic list.
  • Read the cards you get back and delete any that are wrong or too vague.
  • Review a little every day instead of cramming the night before an exam.
Example cell biology flashcards
What is the function of the mitochondrion?It produces most of the cell's ATP through cellular respiration.
What does the Golgi apparatus do?It modifies, sorts and packages proteins and lipids for transport inside or outside the cell.
What is osmosis?The movement of water across a semipermeable membrane from lower solute concentration to higher solute concentration.
What is the role of ribosomes?They synthesize proteins by translating mRNA into a polypeptide chain.
What distinguishes the rough endoplasmic reticulum?It is studded with ribosomes and helps fold and process proteins destined for secretion or membranes.
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Reads your own files

Works with PDF, DOCX, PPTX, plain text notes and images. Photos of pages are read with text recognition.

Spaced repetition built in

Cards come back at the right time, so you spend less effort on what you already know and more on what you keep missing.

Quizzes and mind maps too

Turn the same material into multiple choice, true/false and short answer quizzes with explanations, or a mind map of the topic.

How it works

Upload your material

Add a PDF, a slide deck, a Word file, notes or a photo of a textbook page.

Generate your cards

DeckOwl pulls out key terms, definitions and concepts and writes them as flashcards.

Review and study

Study in the browser on the free plan, or export to Anki, PDF, DOCX or CSV on Plus.

The cards are only useful if you review them, so the deck is scheduled with spaced repetition. You see a card again just before you would forget it, and cards you know well appear less often. If your material has diagrams or slides, you can upload those as images or files and generate from them too.

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Frequently asked questions

How do I make good flashcards from a cell biology chapter?

Write one term or concept per card, and phrase the front as a question such as what a structure does. Check the back against your textbook so the definition is accurate and short enough to recall.

How often should I review flashcards for an exam?

Short daily sessions work better than long cramming sessions, because spaced repetition brings each card back just before you are likely to forget it. Spread your reviews across the days before the exam.

Is there a free plan?

Yes. The free plan includes 3 generations per month and lets you study in the browser. No credit card is needed to start.

Can I export my flashcards to Anki?

Yes, Anki export is included in the Plus plan, which is $39/year or $7.99/month. Students with a school email get 40% off.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.