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Turn your PDF pages with pictures into flashcards

Upload a PDF, slides, notes or a photo of a page. DeckOwl reads the text, including labels and captions in diagrams, and builds flashcards you can review with spaced repetition.

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Drop files here or browsePDF, DOCX, PPTX, text or photos of your notes · several files with Plus

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

Why diagram-heavy PDFs need a different approach

Textbook chapters and lecture decks often carry their meaning in diagrams, so a useful set of PDF flashcards with pictures has to capture the labels and captions along with the explanatory text. DeckOwl reads the text in your PDF and in photographed pages, then turns those labels and terms into question and answer cards.

Upload a PDF, slides, notes or a photo of a page
Turn labels, captions and key terms into flashcards
Review with spaced repetition in the browser on the Free plan
Export to Anki, PDF, DOCX or CSV on the Plus plan

Example labeled-diagram flashcards (anatomy)

Which chamber of the heart pumps oxygenated blood to the body?The left ventricle, because it has the thickest muscular wall and pushes blood through the aorta.

What does the inner membrane of a mitochondrion fold into?Cristae, which increase surface area for the reactions that produce ATP.

In a neuron diagram, which structure carries signals away from the cell body?The axon, which can be wrapped in a myelin sheath to speed up the signal.

Which part of the eye controls how much light enters?The iris, which changes the size of the pupil.

Which lobe of the brain processes visual information?The occipital lobe, at the back of the brain, because it handles early visual processing.

Generate the full set

Reads PDFs and photos

Upload a PDF, DOCX, PPTX, notes or an image. Photographed pages are read with text recognition.

Pulls out diagram labels

Labels, captions and key terms from your material become question and answer pairs you can study.

Spaced repetition built in

Cards come back at the intervals that suit your memory, so you spend time on what you are about to forget.

How it works

Upload your material

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

Generate your cards

DeckOwl turns the text and labels into flashcards. Free accounts get 3 generations per month.

Study with spaced repetition

Review cards in the browser on a schedule that focuses on the ones you miss.

Start with the parts of a diagram you must recall by name, such as structures, stages or axes, and add relationships later. Once those cards feel automatic, move on to the surrounding concepts in the same chapter.

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Frequently asked questions

How many flashcards should I make from a diagram-heavy chapter?

Aim for one card per labeled part or relationship, so a diagram with twelve labels usually gives twelve cards. Cover the most important parts first and add the rest once those feel automatic.

How do I study labeled diagrams with flashcards?

Put the structure name on one side and its function or location on the other, then cover the label and test yourself. Shuffle the order each session so you learn to recognize each part, not its position.

Can I export these flashcards to Anki or PDF?

Yes, but exports are part of the Plus plan, which includes PDF, DOCX, Anki and CSV export. The Free plan lets you study in the browser without exports.

How many generations do I get for free?

The Free plan includes 3 generations per month. Plus, at $39/year or $7.99/month, gives you unlimited generations.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.