π Flashcard Maker
Paste your notes, build a deck, flip through it, and track your progress.
Build a deck to start.
How to Use This Flashcard Maker
Type or paste your study material as term and definition pairs, build the deck, and flip through it card by card. Mark each card Known or Unknown as you go, and the progress bar shows how close you are to mastering the set. Five sample cards are preloaded so you can try the full flow before typing your own.
Enter one card per line in the format Term : Definition. The tool splits on the first colon, so your definitions can contain colons too.
Click Build Deck. Your text is saved in this browser automatically, so it will still be here next time.
Read the term, say the answer out loud, then click the card or press Flip to reveal the definition and check yourself.
Press Known if you got it right or Unknown if you missed it. The card advances automatically and your score updates.
Use Shuffle before each new round so you never memorize the order instead of the material. Repeat until the progress bar reaches 100 percent.
Why Flashcards Work
Flashcards work because of active recall: pulling an answer from memory strengthens the memory far more than re-reading the same page. That is why the order matters. Always try to answer before you flip; peeking first turns the session back into passive reading, which feels productive but builds little. Marking cards Known or Unknown adds a second mechanism, self-testing with feedback, which tells your brain exactly which items need another round. Students who shuffle between rounds do better still, because a fixed order lets you cheat by remembering what comes next rather than the content itself.
Worked Example
The five sample cards are already loaded: Mitochondria, Photosynthesis, Neuron, Osmosis, and Capital of France. Click Build Deck and the first card shows the term "Mitochondria" with a hint to click. Click the card and it flips to reveal "Powerhouse of the cell". If you recalled it correctly, press Known: the progress bar moves to 20 percent (1 of 5) and the next card appears. If you missed it, press Unknown and it counts against your score. Work through all five, then press Shuffle and run the deck again in a new order. When all five are marked Known, the progress bar reads 100 percent and the stats show 5 known, 0 unknown: the deck is mastered.
Tips for Better Decks
Keep each card to one idea. "Mitochondria : Powerhouse of the cell" beats a card with three facts crammed into the definition, because a missed card then tells you exactly what to relearn. Write definitions in your own words rather than copying the textbook; the act of rephrasing is a first round of studying. For lists and processes, make one card per step instead of one card for the whole list. Break big decks into chunks of 20 to 30 cards and master one chunk before adding the next. And review on a schedule: run through a mastered deck again after a day, then after three days, then after a week, which mirrors the spaced-repetition pattern that keeps facts available for the exam rather than just for tonight.
Frequently Asked Questions
What format do my cards need to be in?
One card per line, written as Term : Definition with a colon between them. The tool splits on the first colon, so definitions can contain more colons if needed. Blank lines are ignored. If a line has no colon, the whole line becomes the term and the definition is left blank so you can fill it in mentally.
How does the shuffle work?
Shuffle uses the Fisher-Yates algorithm, which gives every possible card order an equal chance. It reorders your current deck in place, resets you to the first card, and unflips it. Shuffle as often as you like: studying in a new order each round stops you from memorizing the sequence instead of the material.
Does it save my deck?
Yes, on this device. Every time you click Build Deck, the tool stores your text in your browser under the key tb_flashcards, and reloads it automatically the next time you open the page. Nothing is sent to a server, so your cards stay private. Clearing your browser data will remove the saved deck, so keep a copy of important decks in a notes app.
How do the Known and Unknown buttons work?
After you flip a card and check your answer, mark it Known if you got it right or Unknown if you missed it. Marking a card moves you to the next one automatically and updates the progress bar and stats. The goal is simple: get every card to Known. Run through the deck again focusing on the Unknown cards until the progress bar hits 100 percent.
Can I print my flashcards?
Yes. Press Ctrl+P (or Cmd+P on a Mac) and choose "Save as PDF" or your printer. For a physical set, the quickest route is to copy your term:definition list into a document, format it as a two-column table, and print double-sided so terms land on the front and definitions on the back. The on-screen card is best for quick digital review sessions.