Duplicate File Finder
Find duplicate files by SHA-256 hash in your browser. Groups sorted by size, per-group selection, and copy-paste removal list. Free and private.
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What is Duplicate File Finder?
Duplicate File Finder scans your files and groups identical ones by SHA-256 hash, sorted by size for prioritized cleanup. Select which duplicates to remove and copy the list - all computed locally in your browser with WebCrypto.
Key Benefits
- Byte-for-byte duplicate detection using SHA-256, not name matching
- Groups sorted by size so the biggest wins appear first
- Per-group selection gives you full control over what to remove
- Copy the removal list for scripts or team cleanup
- Completely private - files are hashed locally, never uploaded
Common Use Cases
- •Cleaning up duplicate downloads, photos, and project files
- •Finding wasted disk space from repeated file copies
- •Auditing a shared drive for redundant files before archiving
- •Preparing a clean file list for backup or migration
How to Find Duplicate Files
- Select files: Choose the files or folder you want to scan for duplicates.
- Review the groups: The tool groups identical files by SHA-256 hash and sorts groups by size.
- Select and copy: Check the files you want to remove, then copy the list for cleanup.
Key Features
- SHA-256 hash verification for byte-for-byte duplicate detection
- Duplicate groups sorted by file size for prioritized cleanup
- Per-group checkbox selection for files to remove
- Copy-paste removal list for scripts or team sharing
- Instant scanning via WebCrypto - no upload, no server
- Clean report when no duplicates are found