offlinewebtools.com — free, watermark-free browser tools that stay on your device with nothing uploading to our servers

Duplicate File Finder

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

What this tool does

Duplicate File Finder helps you find and identify duplicate files by comparing their content using SHA256 checksums.

What you get

Duplicate File Finder produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.

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

Select at least 2 files to find duplicates

How to Use the Results

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

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.