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flashcard-maker

A flashcard maker is a digital deck builder where each card has a question (front) and an answer (back), letting learners test recall actively rather than re-reading notes — the most efficient evidence-based study technique for memorising vocabulary, formulas, dates, and definitions. The ZTools Flashcard Maker runs entirely in the browser, supports text + simple formatting on both sides, lets you tag cards by subject, run study sessions in random or spaced-repetition order, and persists decks in browser storage so a deck built today is still there next week — no sign-up, no sync server, no upload.

Use cases​

Language vocabulary​

Front: foreign word; back: English meaning + example sentence. Drill in random order daily, mark known words to drop them out of rotation, focus on the still-unknowns.

Medical / legal definitions​

High-stakes professional exams (USMLE, bar) require thousands of definitions. Build subject decks (cardiology, contracts), study by deck, track progress per topic.

Math formulas​

Front: scenario or formula name; back: formula + when to apply. Active recall builds reflexive recognition during timed exams.

Children's spelling and times tables​

Parents build small decks (10–20 cards) per week; kids self-study using random shuffle, with simple known / unknown buttons replacing red-pen correction.

How it works​

  1. Create a deck — Name it (e.g. "GRE vocabulary", "Chapter 4 history"). Decks group cards for focused study sessions.
  2. Add cards — Each card has a front (prompt) and back (answer). Optional: tags, hint text, image link.
  3. Pick study mode — Random shuffle (basic), known-only (review), unknown-only (focused), or spaced repetition (cards reappear at expanding intervals).
  4. Self-grade — For each card, mark "Got it" or "Missed". Spaced-repetition algorithm uses these marks to schedule next review (5 min, 1 day, 3 days, 1 week, …).
  5. Review stats — See accuracy per card, retention curve over time, and which cards remain in the "still hard" bucket — drives where to study next.

Examples​

Input: Deck: SAT vocab. Cards: ephemeral / lasting briefly. ubiquitous / everywhere.

Output: Study session: cards shuffled, each shown front-only, flip to reveal back, mark known/unknown. Unknown cards reappear next session.

Input: Spaced repetition over 30 days

Output: New card seen day 1, again day 2, day 4, day 8, day 16. Mastered cards drop out; struggled cards return to short interval.

Input: Math deck: chain rule / d/dx[f(g(x))] = f'(g(x))·g'(x).

Output: Active recall vs re-reading: studies show ~50% better retention at 1 week.

Frequently asked questions​

What is spaced repetition?

A study schedule where the interval between reviews of a given card grows the more times you successfully recall it (1 day → 3 days → 1 week → 1 month). Optimal for long-term retention.

Why active recall over re-reading?

Re-reading creates familiarity, not memory. Active recall (testing yourself) forces retrieval and strengthens the memory trace. Decades of cognitive-psychology research support this.

Can I import existing decks?

Paste tab-separated front/back lines; the tool creates a card per line. Useful for migrating from Anki, Quizlet, or text files.

Are decks synced across devices?

No — decks live in browser storage on the device that created them. Export to JSON to back up or move between devices.

How many cards per session?

Cognitive science suggests 20–40 cards per session for new material; up to 100 for review of well-known cards. More than that, attention drops.

Do I need to grade myself honestly?

Yes — the spaced-repetition schedule depends on accurate self-grading. Marking "Got it" when you guessed leads to forgotten cards on the test.

Tips​

  • Make cards short — one fact per card. Long cards split into multiple small ones.
  • Use the front for the prompt you will face on the exam; the back is what you need to recall, not extra context.
  • Review daily for 10–20 minutes, not weekly for 2 hours — spaced repetition amplifies short consistent sessions.
  • Tag by subject and chapter so you can study just the topic from yesterday's lecture.
  • Export decks before clearing browser data; otherwise the work is lost.

Try it now​

The full flashcard-maker runs in your browser at https://ztools.zaions.com/flashcard-maker — no signup, no upload, no data leaves your device.

Open the tool ↗

Last updated: 2026-05-05 · Author: Ahsan Mahmood · Edit this page on GitHub