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Find duplicate photos on an SD card
Camera SD cards and phone SD storage often accumulate burst duplicates and re-imported sets. Copy or mount the card, then scan the folder in DupShelf.
Typical SD card duplicate sources
- Burst mode saving near-identical shots (exact mode only groups byte-identical files)
- Importing the same card twice into different folders
- RAW + JPEG pairs only match if bytes are identical
Scan tip
For speed, copy the card to an internal SSD folder first, then scan. USB card readers vary in speed; hashing thousands of files is faster from SSD.
Questions
- Can DupShelf write back to the SD card?
- If Chrome grants read/write access to that folder on your system, yes. Some readers mount read-only; then export CSV and clean manually.