DedupX
Hi HN, I built a duplicate file finder for my brother who's a photography enthusiast and constantly runs out of storage constantly due to resizing a lot of photos and having a lot of duplicates around. Notes: - Incremental hashing: Instead of loading entire files into memory, I hash files in chunks. Files with identical sizes get grouped and progressively hashed until they diverge or match completely. - Perceptual hashing: For images, I use perceptual hashing (pHash) that generates a fingerprint based on visual content rather than bytes. Similar images have similar hashes. - BK-Tree…
DedupX launched on October 31, 2025 with 5 votes.
What it does
👋 Hi folks! I'm Maheep, a backend developer who just shipped my first macOS app - a duplicate file finder for macOS. What makes DedupX different? - Perceptual Image Matching - Finds similar photos even if they're lightly edited (not just byte-for-byte matches) - Memory Efficient - Uses incremental chunk-based hashing - Configurable Similarity - Adjust how strict the matching should be Pricing - Free trial: 10 scans / 7 days (whatever is early) - Annual & lifetime licenses
Crafting distributed systems that behave. And robots that try.
In the maker’s words, at launch
Hi HN, I built a duplicate file finder for my brother who's a photography enthusiast and constantly runs out of storage constantly due to resizing a lot of photos and having a lot of duplicates around. Notes: - Incremental hashing: Instead of loading entire files into memory, I hash files in chunks. Files with…
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Imagededup – Finding duplicate images made easy2019 · github.com · ▲290😎 Finding duplicate images made easy! Contribute to idealo/imagededup development by creating an account on GitHub.
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PDD – Probabilistic De-Duplication of Streams with Bloom Filters2016 · github.com · ▲86Advanced Bloom Filter Based Algorithms for Efficient Approximate Data De-Duplication in Streams - jparkie/PDD
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