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Get every term onto your flashcards, built from your own notes

If a flashcard set skips entries, rebuild it from the original material. DeckOwl turns your PDFs, slides, notes and page photos into 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

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Why a flashcard set can miss terms, and how to get a complete one

Many students run into flashcards that are not showing all terms after importing a set. A few entries may be missing, a table may be skipped, or the count may stop short of the chapter. The fastest fix is usually to stop patching the old set and generate a fresh one from the original file, so every heading and definition is read from the source.

Compare the card count with the number of headings or vocabulary terms in your source.
Check tables, diagrams and captions, which are often skipped during import.
Regenerate from the original file instead of editing a partial set.
Review the new deck once before studying so gaps show up early.

Example biology flashcards to check a complete set

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

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

What is osmosis?The movement of water across a semipermeable membrane toward the side with more solute. Water moves from higher water potential to lower water potential.

What does the rough endoplasmic reticulum do?Its ribosomes help synthesize and fold proteins that are secreted or inserted into membranes.

How do prokaryotic and eukaryotic cells differ?Eukaryotes have a membrane-bound nucleus and membrane-bound organelles. Prokaryotes have neither.

Generate the full set

Terms from your source

Cards are built from your PDF, slides, DOCX, notes or photos of pages, so vocabulary comes from the material itself.

Spaced repetition

Cards you miss return sooner, and cards you know are spaced further apart so review time goes where it helps.

Free to start

The free plan includes 3 generations per month and browser study. No credit card is needed to start.

How it works

Upload your material

Add a PDF, slide deck, DOCX, notes file or photo of a page.

Generate flashcards

Review the cards and compare them against the headings and vocabulary lists in your source.

Study with spaced repetition

Work through the deck in the browser, and export to Anki or CSV on the Plus plan.

DeckOwl reads PDFs, DOCX and PPTX files, plain notes, and photos of pages using text recognition, then produces flashcards you can review with spaced repetition. Before you start studying, scan the headings and vocabulary lists in your source and check them against the new deck.

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Frequently asked questions

How many flashcards should a cell biology chapter have?

There is no fixed count. Aim for one fact per card, and cover every vocabulary term and process the chapter introduces.

How can I tell if a flashcard set is missing terms?

Compare the number of cards with the headings and vocabulary lists in your source, and spot-check tables, diagrams and captions, which are often skipped.

Can I export my DeckOwl flashcards to Anki?

Yes, but export is a paid feature. Anki, PDF, DOCX and CSV export are included in Plus at $39/year or $7.99/month, while the free plan is for studying in the browser.

Do I need a credit card to try DeckOwl?

No. You can start on the free plan without a credit card, and students get 40% off with a school email.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.