Tools · runs in your browser
Folder Compare
Pick two folders, for example a backup and the original. The report lists every file that is missing on one side or different between the two. Nothing is uploaded. Your browser reads the files on your own computer.
| Status | File | Size in 1 | Size in 2 |
|---|
How to use it
- Click Folder 1 and select the first folder.
- Click Folder 2 and select the second folder.
- Click Compare.
- Read the list, or download it as a CSV file and open it in a spreadsheet.
NOTE: Your browser can show a message such as "Upload 2,000 files to this site?". This is the standard browser wording when a page asks to read a folder. This page has no server to upload to. You can turn off your internet connection after the page loads and the tool still works.
What the labels mean
MISSING_IN_1: the file is only in folder 2.MISSING_IN_2: the file is only in folder 1.DIFFERENT: the file is in both folders, but the size or the contents do not match.
Files that match are not listed. By default the tool compares sizes, which is fast. Turn on Compare file contents to read every file and catch edits that leave the size the same.
Need more?
This page only reports. To sync the two folders, compare very large libraries on all CPU cores, or find duplicates, use folder_parity from Mullion FileMan. It is free and open source, and its report uses the same labels.