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Turn class notes and slides into flashcards you review in your browser

Upload what you already wrote or photographed, and get flashcards with spaced repetition. DeckOwl has no drawing canvas, so it works from your material rather than on the cards.

Create flashcards 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 flashcards in seconds

Write your notes first, then turn them into cards

If you want a flashcard app where you can write on the cards themselves, DeckOwl is not that tool. It has no drawing canvas or stylus mode. What it does is turn material you already wrote or photographed into flashcards, so you spend less time typing cards by hand.

Generates flashcards from PDFs, slides, notes and images
Spaced repetition so harder cards return more often
Browser study on the free plan, 3 generations per month
Plus adds exports to PDF, DOCX, Anki and CSV

Example biology flashcards on cell structure

Which organelle produces most of a cell's ATP?The mitochondrion, through cellular respiration.

What is the main function of the Golgi apparatus?It modifies, sorts and packages proteins and lipids for transport to their destinations.

What is osmosis?Diffusion of water across a selectively permeable membrane toward the side with higher solute concentration.

How do prokaryotic and eukaryotic cells differ?Eukaryotes have a membrane-bound nucleus and membrane-bound organelles; prokaryotes lack both.

What does the rough endoplasmic reticulum do?It has ribosomes on its surface and helps fold and process proteins for secretion or membranes.

Generate the full set

Starts from your own material

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

Spaced repetition built in

Cards come back at the intervals that suit your recall, so review time goes to the cards you are still missing.

Quizzes and mind maps too

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

How it works

Upload your notes

Add a PDF, slide deck, text file or photos of handwritten or printed pages.

Review the generated cards

Study the flashcards in the browser on the free plan, with 3 generations per month.

Keep reviewing on schedule

Spaced repetition brings each card back just before you would forget it.

Upload a PDF, DOCX, PPTX, plain text notes or photos of pages, and the cards are generated from that material. Free accounts study in the browser with no exports. Plus adds PDF, DOCX, Anki and CSV export if you want a printable or offline copy.

Handwritten notes still fit into this workflow. Photograph each page, upload the images, and review the resulting cards on a schedule instead of rereading the whole page.

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Frequently asked questions

How many flashcards should I make for a biology chapter?

Aim for one idea per card, which usually means 20 to 40 cards for a chapter. Dense material can need more, so start with key terms and definitions, then add cards for processes and comparisons.

How do I study flashcards effectively if I prefer writing by hand?

Cover the answer, write it out from memory, then check it against the card. Spreading reviews across several days works better than rereading the same page.

Can I write on the flashcards in DeckOwl?

No. DeckOwl has no drawing canvas or stylus mode, so cards are reviewed in the browser rather than annotated.

Do I need to pay to export my cards?

Yes. Free accounts study in the browser with no exports. PDF, DOCX, Anki and CSV export are included in Plus at $99.90/year or $9.99/month.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.