Online Tool Store
Flashcard Deck Merger
Paste two or more flashcard decks to merge them into one set, with likely duplicate cards automatically flagged and removed. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Example
Flashcard Deck Merger
Sample: 2 decks, 15 cards + 22 cards
Example shown — replace it with your own decks.
Result
How it works
- Paste each deck's cards.
- Duplicate cards are automatically flagged.
- Get one merged deck with duplicates removed.
The method
Card front text is compared across decks to catch duplicates, so studying the merged deck doesn't waste time on repeated cards.
FAQ
How are duplicate cards detected?
Cards with matching or near-matching front text across decks are flagged as likely duplicates, so you can review before merging into one clean deck.
Can I merge more than two decks at once?
Yes — add as many decks as you need to combine into a single merged set.
Does this work with any flashcard app's export?
Paste your card text in a simple front/back format; formatting requirements depend on your source app's export style.
How we compare
| Feature | Online Tool Store | Manual copy-paste merge | Rebuilding the deck from scratch |
|---|---|---|---|
| No software install | Yes | Yes | Yes |
| Quick to start | Yes | Slow, error-prone | Very slow |
| Free to use | Yes | Free | Free |
For combining decks without manually checking for duplicates, this saves the tedious comparison step.