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Turn any PDF into flashcards with AI

Upload a PDF, slides, notes or a photo of a page. DeckOwl reads the text and builds flashcards you can review with spaced repetition.

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 turn your own PDF into flashcards

Most students who want to make PDF to flashcards end up copying key terms from lecture slides by hand, which takes longer than the studying itself. A chapter on ecosystems alone can hold dozens of terms like trophic level, producer and decomposer, and retyping each one is slow.

Upload PDFs, slides, notes or photos of pages in one place.
Edit or delete any generated card before you start studying.
Review with spaced repetition instead of rereading the whole chapter.
Free plan includes 3 generations a month with browser study; exports need a paid plan.

Example ecosystem and food web flashcards

What is an ecosystem?A community of living organisms interacting with each other and with nonliving parts of their environment, such as water, soil and climate.

How is a food web different from a food chain?A food chain is one linear path of energy flow, while a food web links many chains that share organisms.

What are primary producers?Organisms such as plants and algae that make their own food through photosynthesis and form the base of the food web.

What is a trophic level?An organism's position in a food chain, such as producers at level one, primary consumers at level two and so on.

Why does usable energy shrink at higher trophic levels?Roughly 10% of energy passes to the next level; the rest is lost mainly as heat through metabolism.

Generate the full set

Any source you already have

Works with PDF, DOCX, PPTX, plain text, notes and images, including photos of printed pages read with text recognition.

Spaced repetition built in

Cards resurface at the right intervals, so you spend time on what you are about to forget instead of rereading everything.

Quizzes and mind maps too

The same upload can produce multiple choice, true/false and short answer questions with explanations, plus mind maps of the main ideas.

How it works

Upload your file

Drop in a PDF, slide deck, document or photo of your textbook page.

Review the cards

Check the generated flashcards, edit any that miss the point, and keep the ones you want.

Study on a schedule

Study in the browser each day. Spaced repetition decides which cards come back and when.

Generating cards from the material you were assigned keeps the wording and examples your instructor used. You can check each card against the source before you rely on it, which matters more than a generic term list.

Once the cards exist, spaced repetition does the scheduling. Missed cards come back sooner and cards you know drop out of the rotation, so review time goes where it helps most.

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Upload a PDF and make flashcards

Upload a PDF, get flashcards with spaced repetition, and study them in your browser.

Import a PDF to Make Flashcards

Upload a PDF and turn its content into spaced-repetition flashcards you can study in your browser.

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Turn your PDF notes into flashcards with spaced repetition. Free to start.

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Frequently asked questions

How many flashcards should I make from one ecosystem chapter?

A useful set is usually a few dozen cards covering the key terms, the energy flow between levels and a few examples of food webs. Keep cards short so each one tests a single idea.

How do food webs differ from food chains for studying?

A food chain shows one path of energy from producer to consumer, while a food web links many chains that share organisms. Cards that ask you to trace both help you see why removing one species affects several others.

Is there a free way to make flashcards from a PDF?

Yes, the free plan includes 3 generations per month and lets you study in the browser. Exporting cards requires a paid plan.

Can I export my PDF flashcards to Anki?

Yes, Plus includes export to Anki, along with PDF, DOCX and CSV export. Students can get 40% off with a school email.

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Keep exploring the topic

Review the main ideas visually or practice recalling them.