Free Developer Tool
CSV Duplicate Finder
Detect duplicate rows or duplicate values in CSV files.
What is CSV Duplicate Finder?
Quickly detect duplicate rows or duplicate values before importing or analyzing CSV datasets.
How to use
- Paste or upload CSV data.
- Choose the column or compare entire rows.
- Find duplicates.
- Review the results.
Features
- Duplicate row detection
- Column-based matching
- Instant analysis
- Large dataset support
Common Use Cases
- Cleaning datasets
- Preparing imports
- Checking exported reports
- Finding repeated records
Example
Input
id,name 1,John 2,Kate 1,John
Output
Duplicate rows found: 2
FAQ
Can I compare only one column?
Yes. Duplicate detection can be performed using a selected column.
Can duplicate rows be highlighted?
Yes. Matching rows are displayed in the results.
Does it modify my CSV?
No. It only analyzes the data.
Missing a feature?
If this tool doesn't cover your use case or is missing functionality, please let me know through the Contact page.
New improvements and features are added based on user feedback.