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A quiz platform that builds practice tests from your own notes

Upload a PDF, DOCX, PPTX, text file or a photo of a page. DeckOwl writes multiple-choice, true/false and short-answer questions with explanations that you can study in the browser.

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 · First set needs no signup · Creates quizzes in seconds

What a quiz platform for lessons needs to do

Teachers and students who already have a lecture video usually also have slides, a transcript or notes that hold the same material, and that text is what a quiz platform should build questions from. DeckOwl does not host or record video, so it works from the text in your files: upload slides, notes or a PDF and it writes questions with explanations.

Questions drawn from the exact slides or notes you upload
Multiple choice, true/false and open questions with explanations
Free plan includes browser study with 3 generations per month
Plus adds PDF, DOCX, Anki and CSV export, and Pro adds QTI 2.1 and Moodle XML

Example intro biology quiz questions

Which organelle is the site of aerobic respiration in eukaryotic cells?Mitochondria. They produce most of the cell's ATP through the citric acid cycle and oxidative phosphorylation.

True or false: prokaryotic cells have a membrane-bound nucleus.False. Prokaryotes keep their DNA in a nucleoid region that is not enclosed by a membrane.

Which molecule carries genetic instructions from DNA to the ribosome?Messenger RNA (mRNA). It is transcribed from DNA and read by ribosomes during translation.

What is the net ATP yield of glycolysis per glucose molecule?2 ATP. Glycolysis uses 2 ATP in its investment phase and produces 4, for a net gain of 2.

Why does a cell lose water when placed in a concentrated salt solution?The solution has lower water potential than the cytoplasm, so water diffuses out of the cell and it shrinks.

Generate the full set

Works from your files

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

Three question types

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

Study in the browser

The free plan includes 3 generations a month and browser study, with no credit card needed to start.

How it works

Upload your material

Add a slide deck, document, set of notes or a photo of a page.

Choose question types

Pick multiple choice, true/false or short answer for the quiz you want to build.

Review and study

Read the explanations, fix anything that looks wrong, then work through the quiz in the browser.

Questions generated from your own wording stay aligned with what was actually taught. Review each one before sharing, because the model can misread dense tables or blurry photos of handwritten pages.

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Frequently asked questions

How many practice questions should I write for one lecture?

Most lectures cover a handful of main ideas, so start with about 10 questions that address each idea once. Add more on the topics you keep missing after reviewing the explanations.

What makes a good multiple-choice question for studying?

Each wrong option should be plausible but clearly incorrect on a second look. The explanation should say why the correct answer fits, because that teaches more than the score alone.

Does DeckOwl work with video lectures?

DeckOwl does not host or record video. Upload the slides, transcript or notes from the lecture and it writes questions from that text.

Which export formats are included in paid plans?

Plus at $39/year or $7.99/month includes PDF, DOCX, Anki and CSV export. Pro at $14.99/month adds QTI 2.1 and Moodle XML export.

Generate free quizzes

Keep exploring the topic

Review the main ideas visually or practice recalling them.