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Turn your own notes into flashcards right in your Mac browser

Upload a PDF, slide deck, set of notes or a photo of a page. DeckOwl builds flashcards from it and schedules reviews with spaced repetition, so there is no separate program to install.

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 a browser-based flashcard maker works on a Mac

Mac users looking for a flashcard maker often expect a download, but most of the work is turning your own material into cards. DeckOwl does that in the browser, so the same deck is available on your Mac without a separate install.

Upload PDFs, slides, DOCX files, notes or photos of pages.
Study flashcards in the browser on the free plan, with 3 generations a month.
Use spaced repetition to focus on the cards you still miss.
Upgrade to Plus at $39/year or $7.99/month to export to PDF, DOCX, Anki or CSV.

Example intro biology flashcards (sample topic)

What organelle produces most of a cell's ATP?The mitochondrion, through cellular respiration, which converts glucose and oxygen into usable energy.

What is osmosis?The movement of water across a semipermeable membrane from an area of lower solute concentration to higher solute concentration.

What does the Golgi apparatus do?It modifies, sorts and packages proteins and lipids for transport to other parts of the cell or outside it.

What is the difference between mitosis and meiosis?Mitosis produces two identical diploid cells, while meiosis produces four genetically varied haploid gametes.

What is the function of the cell membrane?It controls what enters and leaves the cell, which keeps the internal environment stable.

Generate the full set

Works from your own material

Upload PDFs, DOCX, PPTX, plain text notes or images. Photos of pages are read with text recognition.

Spaced repetition built in

Cards come back at the intervals that help you remember them, so you spend less time rereading and more time recalling.

Study or export

Study in the browser on the free plan. Plus adds PDF, DOCX, Anki and CSV export for studying elsewhere.

How it works

Upload your material

Drop in a PDF, slides, notes or a photo of a page from your Mac.

Generate your cards

DeckOwl turns the content into flashcards you can edit before you start.

Review on schedule

Study in your browser and let spaced repetition bring back the cards you are most likely to forget.

Start with the notes you already have. A lecture slide deck or a chapter PDF gives the generator the terms, definitions and facts it needs, and you can check and edit each card before studying.

Once the deck exists, spaced repetition decides what you see next. Cards you miss come back sooner, and cards you know drop off the schedule, which keeps review sessions short.

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Frequently asked questions

How many flashcards should I make for an intro biology unit?

Aim for one card per key term, definition or process in each lecture. A typical chapter often yields 20 to 40 useful cards, and you can delete any that repeat ideas.

How often should I review flashcards with spaced repetition?

Review daily in short sessions, even if it is only 10 to 15 minutes. Spacing study over several days works better than one long cram session before an exam.

Do I need to install a Mac app to use DeckOwl?

No separate Mac download is needed because DeckOwl runs in your browser. You can start without a credit card.

Can I export my flashcards to Anki?

Yes, Anki export is included with the Plus plan at $39/year or $7.99/month. Free users can study in the browser without exports.

Generate free flashcards

Keep exploring the topic

Review the main ideas visually or practice recalling them.