Free AI flashcard maker Turn anything into flashcards
Upload a PDF or a doc, paste your notes, or just type a topic. Get 16 ready-to-study flashcards. Free account, no card needed.
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lezrn reads your material and writes a deck of 16 flashcards from it: a short question on the front, a clear answer on the back, ordered from the basics to the harder stuff. You flip through them right here. No prompt to write.
How to make flashcards with AI
Add your material
Upload a PDF, Word doc (DOCX), TXT or Markdown file, paste your notes, or paste a link to an article. No notes yet? Switch to Ask AI and type a topic, like "the Krebs cycle".
Make the deck
Hit Make my flashcards. The AI picks the most important ideas in what you gave it and writes 16 cards, starting with the foundations and building up.
Study it
Click a card to flip it, then use Next and Previous to move through the deck. Try to answer before you flip. That little bit of effort is what makes it stick.
Example: flashcards on photosynthesis
Five cards in the format the tool writes. Your deck has 16, made from whatever you give it.
- What is photosynthesis?
- The process plants, algae and some bacteria use to turn light energy, water and carbon dioxide into glucose and oxygen.
- Where in a plant cell does photosynthesis happen?
- In the chloroplasts, which hold the green pigment chlorophyll.
- What are the two stages of photosynthesis?
- The light-dependent reactions, which make ATP and NADPH, and the Calvin cycle, which uses them to build sugar.
- Where does the oxygen released by photosynthesis come from?
- From water molecules that get split during the light-dependent reactions.
- What does the Calvin cycle do?
- It fixes carbon dioxide from the air into sugar, using the ATP and NADPH made in the light reactions.
What people use it for
Getting ready for an exam
Upload the study guide or your lecture notes and drill the ideas that matter most. Missing a card tells you exactly what to go back to.
Lecture notes you never reviewed
Paste a week of messy notes. Getting quizzed on them beats reading them over again.
Terms and definitions
Anatomy, law, economics, a new language. Anything where you need to recall a precise answer on demand.
What you get
16 cards per deck. Fronts are short questions or prompts, 12 words at most. Backs are one or two sentences that make sense on their own. Cards go from foundational to advanced, so the first few set up the rest.
When you give it your own material, the AI is told to use only that material, so the cards match your course and not some generic version of the topic. When you use Ask AI, the cards come from the model's general knowledge.
Each run reads up to about 15,000 characters, roughly 2,500 words. Longer files work, but only the first part is used, so one chapter at a time gives better decks.
Why not just ask ChatGPT?
You can, and for a quick one-off it works. The difference here is there's nothing to set up: no prompt to write, no copying cards out of a chat window. You get a clean deck you can flip through on the spot.
The bigger difference is what happens after. Making cards is the easy part. Reviewing them at the right times is what makes you remember. In the full lezrn app, your material becomes a course, and every concept you study goes into a review schedule that brings it back right before you'd forget it.
Frequently asked questions
Is this AI flashcard maker really free?
Yes, with a free lezrn account, which gets a few free runs every day.
Can AI make flashcards from my notes?
Yes. Paste your notes or upload them as a PDF, DOCX, TXT or MD file. The AI is told to use only your material, so the cards follow what your class actually covered.
How many flashcards does it make?
16 per run. That covers the main ideas of a chapter or a lecture without turning into a wall of cards. For more, run it again on the next section.
Can I make flashcards from a YouTube video?
Yes. Paste the YouTube link once you are signed in to your free lezrn account. You can also upload a file, paste text or paste a link to a web article.
Does it work with scanned PDFs?
No. It needs a PDF with selectable text. If you can highlight words in your PDF viewer, it will work. A scan or a photo of a page has no text to read.
Can I edit or export the cards?
Not in the free tool. You study the deck right on the page, and it's gone when you leave. In the full app, everything you make is saved with your course.
How accurate are the cards?
They're usually solid, especially when you give it your own notes, but it's AI and it can get things wrong. Read each answer as you flip, and check your source if something looks off.