Free tool
Generate cloze deletion cards from any text.
Paste your notes or upload a document, choose the Cloze card style, and export a deck with properly formatted {{c1::answer}} cards ready for Anki.
Set the card type to "Cloze" in the generator. Works with pasted text and uploaded PDFs.
What is a cloze deletion card?
A cloze deletion card is a fill-in-the-blank format where a key term or phrase is hidden in context. Instead of "What is the powerhouse of the cell?", a cloze card reads: "The {{c1::mitochondria}} is the powerhouse of the cell."
This format is powerful because it tests recall within context rather than in isolation. When you see a partial sentence, your brain retrieves the missing word using surrounding cues — which is closer to how you'll need to use the knowledge in real situations.
Anki uses the {{c1::term}} syntax. Multiple cloze numbers (c1, c2) in the same card create separate review instances from the same sentence.
When to use cloze cards vs. basic cards
Use cloze when the fact only makes sense in context: drug mechanisms, anatomical associations, chemical formulas, code syntax, clinical criteria, historical sequences, and definitions where the surrounding sentence provides memory hooks.
Use basic when the question-answer format is natural: "What does ATP stand for?", "What is the time complexity of merge sort?", or "What is the holding in Marbury v. Madison?" — cases where one clear question leads to one clear answer.
The generator's Mixed mode automatically chooses the best format per card. The Cloze mode forces cloze format for every card — useful for subjects where context-embedded recall is always preferred (medical, language learning, pharmacology).
Cloze cards for specific subjects
- Medical / USMLE — Multi-cloze cards for drug-target pairs: "{{c1::Beta-blockers}} work by blocking {{c2::beta-adrenergic receptors}} to reduce heart rate."
- Science — Pathway sequences: "In glycolysis, {{c1::glucose}} is broken down into {{c2::pyruvate}} with a net gain of {{c3::2 ATP}} molecules."
- Language learning — Vocabulary in context: "Elle {{c1::parle}} couramment le français." (She speaks French fluently.)
- Computer science — Syntax and formulas: "Binary search has a time complexity of {{c1::O(log n)}}."
Free, no login. Export as .apkg for Anki or CSV for other tools.