Find Duplicates
What is Find Duplicates? (Quick Answer)
Compare images and detect duplicates with perceptual hashing Free online tool, no registration required, 100% client-side processing.
Compare images and detect duplicates with perceptual hashing
By Craftisle Team
About Find Duplicates — Free Online Tool
How to Use Find Duplicates — Step by Step
- Upload images to compare
Drag and drop 2 or more images. Or upload an entire folder of images for batch comparison.
- Set similarity threshold
Adjust the threshold (0-100%). Higher = only exact duplicates. Lower = includes visually similar images.
- Scan for duplicates
Click Scan. The tool computes perceptual hashes and compares them.
- Review results
Duplicate/near-duplicate pairs are displayed with similarity score. Choose which to delete.
Use Cases for Find Duplicates
Photo library cleanup
Find and remove duplicate photos from your collection (same photo saved multiple times, edited vs. original, etc.).
Asset deduplication
Clean up design asset folders by finding visually identical images with different names or formats.
Copyright enforcement
Find unauthorized copies of your images that have been slightly modified (cropped, recompressed, color-adjusted).
FAQ — Find Duplicates Free Online Tool
What is perceptual hashing?
Unlike cryptographic hashing (MD5, SHA), perceptual hashing generates similar hashes for visually similar images. Two images that are 90% similar will have similar pHash values.
Can it detect cropped or resized duplicates?
Yes. Perceptual hash is resilient to resizing and minor cropping. But heavily cropped images may not match.
What similarity threshold should I use?
90%+ = near-exact duplicates. 70-90% = visually very similar (likely duplicates with minor edits). Below 70% = similar but possibly different images.