How to Compare Two Folders Online
December 2025 · 4 min read
Comparing two folders used to require desktop software like WinMerge or Beyond Compare. Now you can do it directly in your browser, for free, with no software installation.
Why Compare Folders?
- Check what changed between two project versions
- Audit a deployment against your local source code
- Compare a backup against the current directory
- Review changes before committing to Git
- Find differences between two downloaded package versions
How to Use DiffPeek's Folder Diff Checker
- Open diffpeek.com
- Select your original folder using the left drop zone
- Select your changed folder using the right drop zone
- Click "Find Differences"
- Browse the file list grouped as Added, Modified, Deleted, Unchanged
- Click any file to see its full side-by-side content diff
Understanding the Results
- Added — files present in the changed folder but not in the original
- Modified — files that exist in both but have different content
- Deleted — files that exist in the original but are missing from the changed folder
- Unchanged — identical files in both folders
Privacy
DiffPeek processes everything locally in your browser. Your files are never sent to any server, making it safe for private source code and confidential documents.