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Upload a PDF and study from a quiz in minutes

Upload PDFs, slides or notes and get multiple-choice, true/false and short answer questions with explanations. Start free, no credit card needed.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

Free account · 3 sets a month · Creates quizzes in seconds

How a PDF becomes a quiz

Most students have a stack of lecture slides or a textbook chapter and no time to write test questions from it. Start by turning a PDF into a quiz with one upload: DeckOwl reads the text, picks out the key facts, and writes questions with explanations so you can check what you actually understood.

Questions are drawn from the pages you upload, not from generic templates.
Each answer includes an explanation you can review when you miss a question.
Mix question types to test both recall and understanding.
Re-run a quiz on new notes whenever your course material changes.

Example photosynthesis quiz questions

Which organelle is the site of photosynthesis in plant cells?The chloroplast. It contains chlorophyll, which absorbs light energy that drives the reactions.

True or false: photosynthesis releases oxygen as a byproduct.True. Water is split during the light-dependent reactions, and the oxygen from that split is released.

What are the two main stages of photosynthesis?The light-dependent reactions and the Calvin cycle. The first stage makes ATP and NADPH, which the Calvin cycle uses to build sugar.

Which gas does the Calvin cycle fix into sugar?Carbon dioxide. The enzyme rubisco attaches it to a five-carbon molecule, which starts the cycle.

Why do the light-dependent reactions require light?Light excites electrons in photosystems II and I, and that energy drives the production of ATP and NADPH.

Generate the full set

Multiple question formats

Multiple-choice, true/false and short answer questions, each with an explanation of the correct answer.

Works with your files

PDF, DOCX, PPTX, plain text, and photos of pages, which are read with text recognition.

Export when you need to

Plus adds PDF, DOCX, Anki and CSV export. Pro adds QTI 2.1 and Moodle XML for learning systems.

How it works

Upload your material

Add a PDF, slide deck, document, or photo of a page from your course.

Generate the quiz

DeckOwl writes questions and explanations based on the content you uploaded.

Study or export

Answer the quiz in your browser, or export it on a paid plan for other tools.

Quizzes work best when the questions come from your own material, so the wording matches your course. Multiple-choice, true/false and short answer formats let you mix recall with application, and each explanation shows why the right answer is correct.

The free plan includes 3 generations per month and studying in the browser. Plus and Pro add exports for Word, PDF, Anki and learning management systems.

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Frequently asked questions

How many quiz questions should I write for a photosynthesis chapter?

A useful set is about 10 to 15 questions covering the light-dependent reactions, the Calvin cycle, and the factors that limit the rate. Mix multiple-choice questions for facts with short answer questions that ask you to explain the process.

How do I study photosynthesis from a quiz most effectively?

Answer each question before you check the explanation, then write down the reasons for any answers you got wrong. Repeat the missed questions over several days so the process sticks.

Can I export my quiz to Moodle?

Yes, Moodle XML export is included in the Pro plan along with QTI 2.1 export. The free plan lets you study the quiz in your browser but does not include exports.

Is there a free plan?

Yes, the free plan includes 3 generations per month and studying in the browser. No credit card is needed to start.

Generate free quizzes

Keep exploring the topic

Review the main ideas visually or practice recalling them.