CSV Cleaner
Clean and fix messy CSV files in your browser. Remove duplicate rows, trim leading/trailing whitespace from cells, remove empty rows, standardize delimiters, and fix BOM encoding issues. Preview all changes before downloading the cleaned file. No signup.
Updated June 2026
- 1Upload your CSV file
- 2Choose cleaning options
- 3Download the cleaned CSV
How to Use CSV Cleaner
- 1
Upload your CSV file
Drag and drop your file into the upload area, or click to browse and select it.
- 2
Choose cleaning options
Remove empty rows, trim whitespace, deduplicate rows, or fix encoding issues.
- 3
Download the cleaned CSV
The cleaned-up file downloads automatically to your device.
Frequently Asked Questions
What cleaning operations are available?▼
Can I preview changes before downloading?▼
Is the original file modified?▼
How are duplicate rows detected?▼
Is the cleaning done in the browser?▼
How to use CSV Cleaner
- 1
Upload your CSV file
Drag and drop your file into the upload area, or click to browse and select it.
- 2
Choose cleaning options
Remove empty rows, trim whitespace, deduplicate rows, or fix encoding issues.
- 3
Download the cleaned CSV
The cleaned-up file downloads automatically to your device.
Frequently asked questions
Everything you need to know about csv cleaner.
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