Flashcard Deck Merger
Paste two decks in simple front/back lines, merge them locally and download the unique cards.
A QUICK WALKTHROUGH
How to use this tool
- Paste one card per line as front<TAB>back or front :: back.
- Merge decks using normalized front text for deduplication.
- Review and download the merged pairs.
Normalization
Duplicate keys lowercase the front, trim surrounding whitespace and collapse internal whitespace. The first card’s front/back pair is retained.
Input boundary
This tool does not parse app-specific exports. Lines without a separator are skipped and all processing stays in this browser.
GOOD TO KNOW
Common questions
How are duplicates detected?
Normalized front text is used as the duplicate key.
Are backs merged?
No. The first complete front/back pair is retained with surrounding whitespace trimmed.
Can I use more than two decks?
Paste additional decks into the input areas or combine them before processing.