Similar-looking photos may be different edits, resolutions or moments, so start with a reversible review.
- Make a separate backup of the originals and check that several photos open from it. Work on another copy, leaving the backup untouched.
- Choose one small folder. Compare image content, dimensions and file details; do not assume identical names mean identical photos.
- Put suspected duplicates in a review folder on the working copy. Keep alternate edits or burst shots when their differences matter to you.
- Recheck that every photo you intend to keep still opens. Remove only confirmed duplicates after the review, retaining the backup.
Cloud synchronization may repeat deletions across devices and is not automatically an independent backup. Understand that behavior before changing a synced library, and keep uncertain images.
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