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Turn your own notes into Canvas-style practice quizzes

DeckOwl reads your course material and writes multiple-choice, true/false and short-answer questions with explanations, so you can test yourself before the real quiz counts.

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

Why practice from your own material beats hunting for answers

The problem with hunting for Canvas quiz answers is that a score on one quiz tells you nothing about the exam that comes after it. DeckOwl takes your own PDFs, slides or notes and writes practice questions with explanations, so you find the gaps while there is still time to close them.

Upload your own lecture notes, readings or slides as the source for every quiz
Choose multiple choice, true/false or short answer, each with an explanation
Retake only the questions you missed to focus your review time
Export to Anki or PDF on Plus, or QTI 2.1 and Moodle XML on Pro

Example intro biology practice questions (cell structure)

Which organelle releases most of the ATP a cell uses for energy?Mitochondria. They carry out cellular respiration, which releases most of the energy stored in glucose.

True or false: plant cells have a rigid cell wall made mostly of cellulose.True. The cellulose wall gives plant cells their shape and keeps them from bursting in pure water.

What is the main job of the Golgi apparatus?Modifying, sorting and packaging proteins and lipids for transport. It receives materials from the endoplasmic reticulum and ships them to their destinations.

Why do animal cells burst when placed in pure water?Osmosis. Water moves into the cell because its interior is more concentrated than the surrounding water, and without a cell wall the membrane can rupture.

Which structure controls movement of molecules between the nucleus and cytoplasm?Nuclear pores in the nuclear envelope. They selectively let molecules such as mRNA and proteins pass in and out.

Generate the full set

Questions from your material

Upload PDFs, DOCX files, PPTX slides, plain text notes or photos of pages. Every question comes from what you actually studied.

Explanations for every answer

Each multiple-choice, true/false and short-answer question includes an explanation, so a wrong answer teaches you why it was wrong.

Mind maps and spaced flashcards

Turn the same material into flashcards with spaced repetition or a mind map, and come back to the topics you keep missing.

How it works

Upload your notes

Add a PDF, slide deck, Word file or photo of a page. No credit card is needed to start.

Choose a question type

Pick multiple choice, true/false or short answer, and set how many questions you want.

Practice and review

Take the quiz in your browser, read the explanation for each miss, and retest the weak spots.

DeckOwl is a web app, not a Firefox extension, and it does not read or pull answers from live Canvas quizzes. You upload the material you were assigned, and the questions are built from that material only.

Free accounts get 3 generations per month and browser study. Plus adds unlimited generations and PDF, DOCX, Anki and CSV export, and Pro adds QTI 2.1 and Moodle XML export.

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Frequently asked questions

Is there a Firefox extension that shows Canvas quiz answers?

DeckOwl is a web app that works in Firefox and other browsers, and it does not offer an extension that reads live Canvas quizzes. It generates practice questions only from the notes, slides or PDFs you upload.

How many practice questions should I make for cell structure?

Start with 15 to 20 questions covering organelles, membranes and transport. Then retake only the ones you missed until you can explain each answer in your own words.

How should I study for a quiz when I have little time?

Review the explanations for the questions you missed first, then turn those topics into flashcards and review them in short daily sessions. Spaced repetition helps the material stay in memory.

Can I export quiz questions for Canvas or Moodle?

QTI 2.1 and Moodle XML exports are included on the Pro plan at $14.99 per month. PDF, DOCX, Anki and CSV exports are on the Plus plan, which costs $39 per year or $7.99 per month.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.