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Turn any PDF you upload into a quiz with AI

Drop in lecture slides, class notes or a textbook chapter. DeckOwl writes practice questions from that exact material, with an explanation for every answer.

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Free account · 5 sets a week · Creates quizzes in seconds

Why upload PDF files instead of typing questions by hand

Most quiz tools expect you to type every question yourself, which takes longer than the studying itself. If your material already lives in a file, you can upload PDF lecture slides or a textbook chapter and have questions drafted from that actual content. DeckOwl reads the text and writes multiple-choice, true/false or short answer questions, each with an explanation you can check against the source.

  • Accepts PDF, DOCX, PPTX, plain text and photos of pages
  • Multiple-choice, true/false and short answer question types
  • Explanations included with every question
  • Study in the browser on the free plan, with exports on paid plans
Example cell biology quiz questions
What is the main job of mitochondria in a cell?They produce most of the cell's ATP through cellular respiration, which converts glucose and oxygen into usable energy.
True or false: water moves by osmosis toward the side with higher solute concentration.True. Water moves toward higher solute concentration because that side has a lower water potential.
Where do the light-dependent reactions of photosynthesis take place?On the thylakoid membranes inside chloroplasts, where photosystems capture light energy.
What does DNA polymerase do during replication?It adds complementary nucleotides to a growing DNA strand, building the new strand in the 5' to 3' direction.
Why does a cell shrink when placed in a hypertonic solution?The outside solution has a higher solute concentration, so water leaves the cell by osmosis and the cell loses volume.
Generate the full set

Works with the files you already have

Upload PDF, DOCX, PPTX, plain text or a photo of a page. Scanned pages are read with text recognition.

Multiple-choice, true/false and short answer

Choose the question type that fits your study goal, or mix them in one quiz so you practice both recognition and recall.

Explanations on every question

Each answer explains why it is correct, so a missed question becomes a short lesson instead of just a red mark.

How it works

Upload your PDF

Add a file or paste your notes. No credit card is needed to start.

Pick the question type

Select multiple-choice, true/false or open questions, then set how many you want.

Review, edit and study

Remove anything off-topic, fix wording, then take the quiz in your browser.

Always review the draft before you study. Delete anything off-topic, tighten the wording and keep the explanations so every wrong answer teaches something. Free accounts get 5 generations a week and study in the browser. PDF and DOCX export come with Plus, and QTI 2.1 or Moodle XML export come with Pro.

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Frequently asked questions

Can I upload a PDF and get quiz questions from it?

Yes. Upload a PDF, slide deck, Word file or photo of a page, and DeckOwl generates questions based on that text. Each question includes an explanation.

How many practice questions should I make for a cell biology unit?

Start with 15 to 20 questions on one topic at a time, such as osmosis or cellular respiration. Mix multiple-choice with short answer so you practice recalling facts, not only spotting them.

Can I export my quiz to Moodle?

Moodle XML export is included on the Pro plan, along with QTI 2.1 export. PDF and DOCX export are on Plus, and the free plan is limited to studying in the browser.

Is there a free way to try it?

Yes. The free plan includes 5 generations a week and no credit card is needed. Students with a school email get 40% off paid plans.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.