🔍

Duplicate File Finder

Find duplicate files in your collection using hash-based comparison. Identify exact duplicates instantly.

📁
Drop files here or click to select multiple files
Select files from the same folder to find duplicates

Privacy & Security: This tool is for personal use. Your files are not uploaded to any server. All processing happens client-side in your browser.

Disclaimer: Always verify before deleting files. This tool identifies potential duplicates but cannot determine which copy you want to keep.

About Duplicate File Finder

This free online tool helps you identify duplicate files in your collection. Using hash-based comparison (SHA-256), it can find exact duplicates even if they have different filenames. This helps you clean up storage space and organize your files better.

How to Use

  1. Select files by dropping them onto the upload area or clicking to browse. You can select multiple files at once.
  2. Choose your comparison method: content hash (most accurate), filename, size, or a combination.
  3. Click Scan for Duplicates to analyze your files.
  4. Review the results and identify which files can be safely removed.

Frequently Asked Questions

Is my file data kept private?

Absolutely. All processing happens entirely in your browser. No file data is sent to any server, logged, or stored anywhere. File hashes are computed locally.

How does hash-based comparison work?

The tool computes a SHA-256 hash (digital fingerprint) for each file. Files with identical hashes have identical content, even if they have different names. This is the most reliable way to find true duplicates.

Can the tool delete files automatically?

No, for security reasons, this tool only identifies duplicates. You must manually delete files from your system after reviewing the results.

Is there a file size or quantity limit?

The tool can handle multiple files, but very large files (over 100MB each) or thousands of files may take longer to process due to browser limitations.

Can I compare files across different folders?

Yes, you can select files from multiple locations. The tool will analyze all selected files and find duplicates regardless of their original location.