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Make flashcards from any document you already have

Upload a PDF, slide deck, set of notes or a photo of a page. DeckOwl reads the text and builds a flashcard deck you can review with spaced repetition.

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 · First set needs no signup · Creates flashcards in seconds

Why build flashcards from a document instead of by hand

Copying a 40-page chapter into blank index cards can take an entire evening, and most of that time goes to retyping text instead of testing yourself. A flashcard maker from document upload cuts that step down to minutes, and the cards stay tied to the exact wording your course uses.

Upload PDFs, slides, notes or images and get a card deck from the same material.
Review cards with spaced repetition so weak spots return before exam day.
Edit any card in the browser before you study, so the deck matches your lecture notes.
Free plan: 3 generations per month, study in the browser, no exports.

Example biology flashcards on cell structure

What is the function of mitochondria?They produce ATP through cellular respiration, which is why they are called the powerhouse of the cell.

What does the cell membrane do?It controls what enters and leaves the cell, using a phospholipid bilayer with embedded proteins.

What is the role of ribosomes?They build proteins by translating messenger RNA into chains of amino acids.

How does the nucleus differ from the nucleolus?The nucleus holds most of the cell's DNA, while the nucleolus inside it assembles ribosome subunits.

What distinguishes plant cells from animal cells?Plant cells have a rigid cell wall, chloroplasts and a large central vacuole that animal cells lack.

Generate the full set

Starts from your own material

Upload PDF, DOCX, PPTX, plain text or images. Photos of pages are read with text recognition, so handwritten-free printed pages work too.

Spaced repetition built in

Cards resurface at the intervals where you are most likely to forget them, so review time goes to the material you actually need.

Export when you need it

Plus members can export to PDF, DOCX, Anki or CSV, so the same deck can move into the app you already use.

How it works

Upload the document

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

Review the generated cards

Check the fronts and backs, edit anything that reads oddly, and remove cards you do not need.

Study on a schedule

Work through the deck in the browser. Cards you miss come back sooner, and cards you know wait longer.

The quality of the deck depends on the source. Clean PDFs and typed notes give the most accurate cards, while photos of pages are read with text recognition and should be checked for missed words before you start studying.

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Frequently asked questions

How many flashcards should I make from one chapter of biology?

A focused chapter usually yields enough cards to cover each term, its definition and one application question. Aim for cards that each test a single fact so that a missed card tells you exactly what to review.

How should I write the front of a flashcard for cell structure?

Write the front as a specific question, such as what the function of the Golgi apparatus is, rather than just a term. Keep the back short enough to answer in one or two sentences so you can grade yourself quickly.

Can I export the flashcards to Anki?

Yes, but export is a paid feature. Plus ($39/year or $7.99/month) includes PDF, DOCX, Anki and CSV export, and the free plan is limited to studying in the browser.

Does the free plan include spaced repetition?

Spaced repetition is included in Plus, which also gives you unlimited generations. The free plan lets you study in the browser with 3 generations per month.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.