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Turn your own study material into Anki-ready refold flashcards

DeckOwl builds flashcards from your PDFs, slides, notes or photos of pages, with spaced repetition built in. Start free with no credit card, and export to Anki on Plus.

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 your own refold-style deck

Pre-made refold anki deck files often use sentences that do not match the shows, articles and books you actually read, which makes the cards harder to use. DeckOwl builds flashcards from your own material, so each card comes from text you already have.

Use sentences from material you already read or watch, so the context is familiar.
Keep each card focused on one target word or phrase, with the meaning on the back.
Review new cards in short sessions so the deck stays manageable.
Export to Anki on Plus if you want to study on your phone or desktop app.

Example sentence-mining flashcards for Spanish

Sentence: Tengo que terminar este informe antes del lunes. Target word: terminarterminar = to finish. Full meaning: I have to finish this report before Monday.

Sentence: ¿Dónde está la biblioteca? Target word: bibliotecabiblioteca = library. Full meaning: Where is the library?

Sentence: Me encanta caminar por la playa al atardecer. Target word: atardeceratardecer = sunset or late afternoon. Full meaning: I love walking on the beach at sunset.

Sentence: No sé si llegaré a tiempo. Target word: llegaréllegaré = I will arrive (future of llegar). Full meaning: I do not know if I will arrive on time.

Sentence: Ayer compramos pan y leche en el mercado. Target word: compramoscompramos = we bought (preterite of comprar). Full meaning: Yesterday we bought bread and milk at the market.

Generate the full set

Cards from your own sources

Upload a PDF, DOCX, PPTX, plain text or a photo of a page. The text is read and turned into flashcards that match what you are actually studying.

Spaced repetition

Cards come back at the intervals your memory needs, so you review the hard ones more often and the easy ones less often.

Anki export on Plus

Plus exports your decks to Anki, along with PDF, DOCX and CSV. The free plan keeps everything in the browser.

How it works

Upload your material

Add the book chapter, article, slides or notes you want to learn from. Photos of pages work too.

Generate your flashcards

DeckOwl creates cards with spaced repetition. Check them and remove any you do not need.

Study or export

Review in the browser on the free plan, or export to Anki on Plus.

Upload a PDF, DOCX, PPTX, plain text or a photo of a page, and the text is read and turned into cards with spaced repetition. Free accounts get 3 generations a month and can study in the browser. Plus adds unlimited generations and Anki export.

Students with a school email get 40% off, and no credit card is needed to start.

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Frequently asked questions

How do I choose sentences for a refold-style deck?

Pick sentences from material you can understand most of, with one or two words you do not know yet. Those are the sentences that give the most useful cards.

Should my cards include the full sentence or just the target word?

Including the full sentence helps you learn the word in context, which is the point of this method. Keep the target word clearly marked so the card has one clear focus.

Can I export my flashcards to Anki?

Yes, Anki export is included in the Plus plan, which is $39/year or $7.99/month. The free plan lets you study in the browser but does not include exports.

Is there a free plan?

Yes. The free plan includes 3 generations per month and studying in the browser, with no credit card needed to start.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.