Turn any document into flashcards worth trusting
Upload lecture slides, a textbook chapter, or your own notes and get a deck of flashcards drawn from what the document actually says. Then study them with spaced repetition built in, or export the deck to Anki.
Drop a document to get started
PDF, Word, PowerPoint, text, images, audio or video. Up to 20 MB and 50 pages. No account needed for your first one.
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Without an account: 1 document, up to 50 pages, kept for 24 hours. Sign up any time and it comes with you.
From document to deck in three steps
Upload
A PDF, slides, notes, or a recording.
Generate and curate
CruxDoc drafts cards from the material; you keep, edit, or drop each one before studying.
Review on a schedule
Spaced repetition decides what you see today; missed cards return sooner, known cards later.
Cards grounded in the source, not the model's memory
Flashcards are only useful if the answers are right. CruxDoc generates cards from the indexed text of your document, the same verified foundation its cited answers stand on, and the source stays one click away while you review.
When the deck is solid, take it anywhere: export as a real Anki .apkg deck or CSV, or keep reviewing inside CruxDoc alongside quizzes and blurting on the same material.
Frequently asked questions
Q.01What can I make flashcards from?
PDFs, Word documents, PowerPoint slides, text and Markdown files, images of pages, and audio or video recordings. Anything CruxDoc can read, it can turn into cards.
Q.02Is the flashcard generator free?
The free plan includes the full study layer: flashcard generation, spaced-repetition review, and export. Your very first document needs no account at all.
Q.03Does it do spaced repetition?
Yes. Reviews are scheduled with a spaced-repetition scheduler, so cards you know drift out and cards you miss come back sooner. No add-ons or setup.
Q.04Can I edit the cards before studying them?
Yes. Generated cards are a starting point. You curate the deck, edit fronts and backs, and delete what you do not want before the first review.
Q.05Can I export to Anki?
Yes, as a real .apkg deck (or CSV). If Anki is where you live, see the dedicated PDF-to-Anki page.
Make flashcards from a document
Drop a document to get started
PDF, Word, PowerPoint, text, images, audio or video. Up to 20 MB and 50 pages. Free. No account needed for your first one.
Processing continues if you close the tab.
No account needed for your first document.