1
First file
Previous file data
All tools
Comparison
Compare Lists
Find common items and entries that exist in only one of two customer, product, or email lists.
Supports CSV, XLSX, TXTTry without logging in
Upload files
Add the two files you want to compare.
2
Second file
Current file data
Files are handled securely and the originals are never changed.
TOOL GUIDE
How to use Compare Lists
Find common items and entries that exist in only one of two customer, product, or email lists.
Workflow
1. Prepare the input
Choose a file in CSV, XLSX, TXT format. Where available, use a sample file to inspect the complete result flow first.
2. Confirm the processing rules
Add exactly two files to compare. For Excel files, you can select a sheet from each file.
3. Review and save the result
After processing, review the summary metrics and before-and-after preview, then save only the result you need.
Processing rules for this tool
No extra options are required. The file structure and selected sheet determine the operation. Check the file name and format before starting.
- Supported input formats
- CSV, XLSX, TXT
- Files per operation
- Add exactly two files to compare. For Excel files, you can select a sheet from each file.
- What the result shows
- Separate shared and list-only items.
Safe workflow
Your original upload is never modified. A separate result file is created.
Preview before processing
Review how the result will change before saving it.
Only the settings you need
Choose the relevant options and start right away.