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Turn your own notes and PDFs into flashcards in an app

Upload PDFs, slides, notes or photos of pages and DeckOwl turns them into flashcards with spaced repetition. No credit card needed to start.

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Free · First set needs no signup · Creates flashcards in seconds

Why build your own flashcards from your material

Most students who want to make your own flashcards already have the material they need in a lecture PDF, a set of slides or a photo of a textbook page.

  • Upload PDF, DOCX, PPTX, plain text or images
  • Photos of pages are read with text recognition
  • Spaced repetition schedules every review
  • Free plan includes 3 generations per month
Example intro biology flashcards
What is the main function of mitochondria?They produce most of the cell's ATP through cellular respiration.
How do mitosis and meiosis differ?Mitosis makes two genetically identical diploid cells; meiosis makes four genetically varied haploid gametes.
What is osmosis?The movement of water across a semipermeable membrane from low solute concentration to high solute concentration.
What does the Krebs cycle produce per turn?Per acetyl-CoA it yields 3 NADH, 1 FADH2, 1 GTP or ATP, and 2 CO2.
Which bases pair in DNA?Adenine pairs with thymine and guanine pairs with cytosine, held by hydrogen bonds.
Generate the full set

Your own material

Upload PDF, DOCX, PPTX, plain text notes or images. Photos of pages are read with text recognition.

Spaced repetition

Cards come back on a schedule, so you review each one right before you would otherwise forget it.

Quizzes and mind maps

Turn the same material into multiple choice, true/false or short answer quizzes with explanations, or into a mind map.

How it works

Add your material

Upload a PDF, slides, notes or a photo of a page.

Generate your cards

DeckOwl drafts flashcards from your own content, so you check them against your source.

Study in the browser

Review on the spaced repetition schedule. The free plan includes 3 generations a month.

Writing cards by hand works, but it takes time that could go to review. An app that reads your files and drafts the cards lets you check each one against the source and fix anything wrong before you study.

Cards built from your own course content match what your instructor is likely to test, and spaced repetition brings each one back at the right time.

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Frequently asked questions

How many flashcards should I make for an intro biology unit?

Start with one card per key term, process or definition from each lecture. Then cut the cards you already know well and add ones you keep missing.

What makes a good flashcard for memorizing terms?

Keep one fact per card, put the question on the front and a short answer on the back. Cards that ask how or why work better than a bare word with a long definition.

Can I export my flashcards?

Yes, the Plus plan lets you export to PDF, DOCX, Anki and CSV. The free plan lets you study in the browser, but exports are not included.

Do I need a credit card to try DeckOwl?

No, you can start without a credit card. Students get 40% off with a school email.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.