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Duplicate File Finder

Find and identify duplicate files by comparing their content using SHA256 checksums

Free to use, no watermarks, runs in your browser—nothing uploads to our servers

Select Files to Analyze for Duplicates

Select at least 2 files to find duplicates

How to Use the Results

1. Review duplicate groups: Each group contains files with identical content
2. Keep one copy: For each group, keep one file (marked "Keep") and delete the rest
3. Save space: Deleting duplicates will free up the "Potential Savings" amount
4. Export report: Download a detailed report for reference before deleting files

Jump to helper sections

How does duplicate detection work?

The tool calculates a SHA256 checksum for each file and compares them. Files with identical checksums have identical content, even if they have different names.

Will files with different names be detected?

Yes! Duplicate detection is based on file content (checksums), not names. Two files with the same content but different names will be identified as duplicates.

How much space could I save?

The tool shows potential savings by calculating the total size of duplicate files. Keep one copy of each duplicate group and delete the rest to save space.

Is this process secure?

Yes, all processing happens locally in your browser. Files are never uploaded to any server, ensuring complete privacy and security.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.

Session file-tool analysis history

Keep a local, session-only record of successful file analyses in this browser session.

No analysis results yet. Run a file analysis to populate this panel.

Session download history

Re-download generated file outputs from this browser session.

No generated outputs yet. Use a file tool in this session to populate this panel.