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Turn KOReader highlights into flashcards with AI

Save the passages you highlight while reading, then generate question-and-answer cards you can review on a schedule.

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 KOReader readers turn highlights into cards

Many people who read on e-ink devices with KOReader highlight far more than they ever review. Turning those KOReader-based Anki flashcards from your own highlights gives you a short review list built from the passages you already cared about enough to mark.

Highlights become cards tied to the passages you chose to mark.
Spaced repetition schedules reviews before you forget each card.
The free plan lets you generate and study in the browser with no exports.
Plus adds Anki, PDF, DOCX, and CSV export and unlimited generations.

Example reading-comprehension flashcards from KOReader notes

What is spaced repetition?Reviewing material at increasing intervals, just before you would forget it, which strengthens long-term recall.

What does KOReader's dictionary lookup let you do while reading?Look up a highlighted word without leaving the book, and the word can be saved to a vocabulary list for later review.

Why is rereading a chapter less effective than active recall?Rereading feels familiar but builds weak memory traces. Answering questions from memory forces retrieval, which strengthens recall.

What makes a good flashcard?One clear question with one answer. Cards that bundle several facts are hard to grade honestly and slow down review.

What is the difference between a highlight and a note?A highlight marks a passage as important, while a note adds your own explanation. Turning notes into questions tests whether you can reproduce the idea.

Generate the full set

Works with your highlights

Paste highlights exported from KOReader as plain text, or upload the PDF you were reading.

Spaced repetition built in

Cards come back at growing intervals, just before you would forget them, so review time goes to what you miss.

Export to Anki on Plus

Plus exports your cards to Anki, PDF, DOCX, and CSV so your decks work wherever you study.

How it works

Add your reading notes

Paste KOReader highlights as text, or upload a PDF, DOCX, PPTX, or a photo of a page.

Generate and edit cards

DeckOwl writes flashcards from your material. Trim or reword any card that does not fit.

Review or export

Study in the browser on the free plan, or export to Anki once you move to Plus.

Good cards ask one thing each. A highlighted definition becomes a term on the front and its meaning on the back, and a highlighted argument becomes a question about why the author makes it. Reviewing these at spaced intervals keeps the material in memory after the book is closed.

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Frequently asked questions

How do I turn KOReader highlights into flashcards?

Copy or export your highlights from KOReader as plain text and paste them into DeckOwl. The tool writes question-and-answer cards from that text, which you can edit before studying.

How many cards should I make from one chapter?

Make one card per idea rather than one per page. Highlighted definitions, causes, and examples usually make the strongest cards, and you can drop weak ones before you start reviewing.

Can I export these cards to Anki?

Yes, but export is a paid feature on the Plus plan at $39 per year or $7.99 per month. The free plan lets you study the cards in the browser.

Do I need a credit card to start?

No. You can start on the free plan with 3 generations per month and study in the browser without adding a card.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.