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CSV Cleaner: clean up messy CSV data
Upload your CSV and remove blank rows, duplicates, and empty columns in one pass.
Drag and drop a CSV file here
Your file never leaves this browser.
Why use this CSV Cleaner?
- Four cleaning options. Combine them however the file needs.
- Live results. Each option you switch on shows its effect right away.
- Private by design. Your browser processes the file. Nothing uploads.
How to clean a CSV file
- Upload your CSV file.
- Tick the cleaning options you need.
- Copy the result or download it as .csv.
When you need this tool
Exports from other systems often carry blank or duplicate rows left over from merging several sources.
Before you import data into a database or another spreadsheet, cleaning it first prevents errors and inconsistent records.
Frequently asked questions
Can I combine several cleaning options?+–
Yes. Trim spaces in each cell, remove blank rows, remove duplicate rows, and remove empty columns. All four work together.
Does a row count as a duplicate only when every cell matches?+–
Yes. A row is a duplicate when all its cells match a row that appeared earlier. The first copy stays.
Does the tool remove an empty header?+–
No. The header stays as the first row. The cleaning options apply only to the data rows below it.
Is my file uploaded to a server?+–
No. Everything runs in your browser.