DuoBolt
Duplicate file finder and look-alike photo culler macOS/Win
What it does
DuoBolt is a desktop application for macOS and Windows. It finds exact duplicate files by full BLAKE3 hashing, and groups look-alike photos with a separate engine that ranks them and explains the pick. All inference runs on the device; nothing is uploaded and no account is required. DuoBolt prioritizes safety, performance, and clarity with a local-first architecture where all processing happens on your machine. The workflow is review-first, fully auditable, and reversible.
Find duplicate files and similar photos with DuoBolt. Duplicates proven byte-for-byte with BLAKE3, photos ranked by on-device AI. Review before anything moves, on macOS and Windows.
Duplicates proven byte-for-byte. Similar photos ranked and explained by AI that runs on your machine — no account, no upload. And nothing is deleted without you . New in 2.1: your Photos library , on a Mac. Free shows you the results, not a paywall. The cap is on how much you see, never on how well . Duplicates are proven. Similar photos are ranked and explained. They never pretend to be the same thing. Point it at folders — or, on a Mac, at your Photos library. Exclude the ones you want left alone. Set a size floor. Then it runs. All of it under Customize… , with defaults that are already sensible. The photos side adds two more: how close a match has to be, and how large a group may get.…from duobolt.app
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