Result will appear here.
Find byte-identical duplicate images with SHA-256 — exact matches only, in your browser.
Groups byte-identical files using a SHA-256 of their raw bytes and reports duplicate groups.
Exact duplicates only — not resized, cropped or visually similar images.
Unreadable or oversized files are skipped with a reason; the scan continues.
All hashing happens locally with Web Crypto; nothing is uploaded.
Duplicate Image Finder scans the files you select and groups together any that are byte-for-byte identical, using a SHA-256 of each file's raw bytes. It finds exact duplicates only — it will not catch resized, cropped, recompressed or visually similar copies.
Select as many files as you like. Each file is size-checked individually, and any file that cannot be read is listed as skipped while the rest are still compared, so one bad file never aborts the whole scan.
The result lists each duplicate group, the count of unique files and any skipped files. Nothing is uploaded; all hashing happens in your browser.
A SHA-256 of each file finds true byte-identical copies with no false positives.
Each file is checked on its own; an unreadable file is skipped, not fatal.
Duplicate groups, unique count and skipped files are all listed in the report.
All hashing runs in your browser with Web Crypto; nothing is uploaded.
Find identical re-saved copies cluttering a download or export folder.
Spot byte-identical files before archiving a set of images.
Confirm that a copied file matches the original exactly.
Get a quick count of unique vs duplicate files in a selection.
No. It detects byte-identical duplicates only. Resized, cropped, recompressed or re-saved versions of the same photo have different bytes and will not be grouped as duplicates.
It computes a SHA-256 of each file's raw bytes; files with the same hash are byte-for-byte identical and are placed in the same duplicate group.
That file is listed as skipped with the reason, and the scan continues. As long as at least one file can be read, you still get a report.
Each file is size-checked against the per-file limit; very large files are skipped rather than read into memory. There is no fixed count limit beyond your device's memory.
No. Every file is hashed locally with the Web Crypto API on this page; nothing is sent to a server.
Tools that pair well with Duplicate Image Finder.