What are flashcards?
Flashcards bring the classic study method — a question on the front, an answer on the back, flipped through repeatedly to memorize — onto the web. This tool lets you freely add your own question-and-answer pairs, and shuffles the card order randomly using the Fisher-Yates algorithm every time you study, so you can't just memorize the sequence. Clicking a card flips it with a smooth animation to reveal the answer, and every card you create is saved to your browser's local storage, so it's still there even after a refresh or a return visit later. Popular flashcard services like Quizlet often limit how many sets you can create, show ads, or gate features behind a paid tier — since this tool has no account system at all, there's nothing to limit or paywall.
How to use it
Enter a question and answer in the card management area below and press "Add Card" to add it to your study list. On the study screen, click a card to flip it and reveal the answer, use "Previous"/"Next" to move between cards, or "Reshuffle" to randomize the order again. Cards you no longer need can be removed with the "Delete" button in the card list.
When it comes in handy
- Repeatedly memorizing foreign-language vocabulary or exam terms
- Testing yourself in random order instead of memorizing a fixed sequence
- Managing your own set of custom question-and-answer cards
- Studying quickly with no login required, saved only in your browser
Why does random order actually build real recall?
If you always flip through cards in the same order, your brain often ends up memorizing the sequence rather than the actual answer — you might unconsciously learn that card 4 always follows card 3, then suddenly blank when the order is shuffled, like on a real exam. Fisher-Yates shuffle is an algorithm that gives every card an exactly equal chance of landing in any position, so you get a genuinely new order every time and avoid order-dependent "fake" memorization.
Tips for more effective flashcard study
- Following the spaced repetition principle, reviewing a little over several days tends to build longer-lasting memory than cramming everything in one sitting
- Keep questions concise and avoid embedding hints toward the answer within the question itself
- Cards you already know well still stay in the shuffle — resist the urge to skip them, since actually recalling them each time strengthens the memory further
- If a card set grows too large (50+), splitting it into separate topic-based sets can make studying more effective
Frequently Asked Questions
- Where are my cards saved?
- Cards are saved in your browser's local storage, not on a server. They'll still be there the next time you open the same browser, but they won't show up on a different device or browser.
- Is the card order always random?
- Yes. The order is reshuffled using the Fisher-Yates algorithm whenever you add or delete a card, and whenever you press "Reshuffle".
- I made a mistake on a card. Can I edit it?
- There's no edit feature yet — delete the card from the card list and add it again with the correct content.
- How many cards can I save?
- There's no specific limit, but localStorage has a per-browser storage cap (typically 5-10MB), which is enough for thousands of cards in practice — plenty for normal use.
- Can I view cards in the order I added them, without shuffling?
- No — preventing order-based memorization is this tool's core purpose, so it's designed to always study in random order.
- Can I add images to a card?
- Currently only text (question and answer) is supported. If you need to memorize something visual, we'd suggest describing it in words instead.