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A quiz app for PC that builds questions from your own notes

DeckOwl turns your lecture slides, PDFs and typed notes into quizzes with explanations. Open it in any PC browser and start practicing.

Create quizzes nowFree · No credit card required

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

Why a quiz built from your own material works better

Most people looking for a quiz app for PC already have the material they need: lecture slides, a textbook PDF or a page of handwritten notes. The hard part is turning that material into questions quickly enough to use it.

Works in any modern PC browser with no separate download
Free plan includes 3 generations per month and browser study
Plus adds unlimited generations and PDF or DOCX export
Students get 40% off with a school email, and no credit card is needed to start

Example renewable energy quiz questions

Which renewable source turns sunlight directly into electricity using photovoltaic cells?Solar power. Photovoltaic cells convert light straight into electricity without combustion.

True or false: geothermal plants draw heat from the Earth's interior.True. Underground steam or hot water drives turbines, and the heat is available around the clock.

Why is hydropower classed as renewable?Its fuel is flowing water, which the water cycle replenishes continuously. It is not used up when generating power.

What is the main limitation of wind power?Intermittency. Output depends on wind speed, so storage or grid balancing is needed to match demand.

True or false: biomass energy is always carbon neutral.False. Carbon neutrality depends on how the fuel is sourced and regrown, since burning biomass still releases CO2.

Generate the full set

Multiple-choice, true/false and open questions

Each quiz mixes question types so you practice recognition and recall, not just picking from a list.

Explanations for every answer

When you miss a question, the explanation shows why the correct answer is right so you can fix the gap.

Runs in your PC browser

No separate install. Work through quizzes on Windows or Mac in the browser you already use.

How it works

Upload your material

Add a PDF, DOCX, PPTX, plain text file or a photo of a page. Photos are read with text recognition.

Generate the quiz

Choose the question types you want and DeckOwl writes the questions with explanations.

Practice and review

Take the quiz in the browser, check your misses, and go back to the questions you got wrong.

Generated questions tied to your own readings test what your course actually covers. Mixing multiple-choice, true/false and open questions also shows whether you can recognize an answer or explain it from memory.

Explanations matter as much as the score. Reading why an option is wrong is often what makes the next attempt stick.

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Turn PDFs, slides or notes into a multiple-choice or true/false quiz with explanations.

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Quiz App From Your Own Notes

Make quizzes from slides, PDFs or notes, with explanations for every answer.

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Frequently asked questions

How many quiz questions should I make from one chapter on renewable energy?

Start with 10 to 15 questions so you cover each source and its main trade-off. Once you miss fewer than a third of them, generate a new set on the same chapter to test retention.

Which question types work best for renewable energy topics?

Multiple-choice questions check that you can identify each source and its features. Open questions about trade-offs, such as intermittency or land use, build the explanations you need for exams.

Can I use DeckOwl on my PC without installing anything?

Yes. DeckOwl runs in a browser on Windows or Mac, and the free plan includes studying in the browser. Exporting to PDF or DOCX requires the Plus plan at $99.90 per year or $9.99 per month.

Can I export quizzes for a class or LMS?

Export to PDF, DOCX, Anki and CSV is included in Plus. The Pro plan at $14.99 per month adds QTI 2.1 and Moodle XML export for learning management systems.

Generate free quizzes

Keep exploring the topic

Review the main ideas visually or practice recalling them.